Desserts
This banana split crumbl cookie recipe delivers all the flavors of a classic dessert in one irresistible bite—vanilla ice cream sandwiched between layers of rich chocolate and banana-infused cookie crumbles.
The secret lies in baking the cookies slightly underdone so they stay soft enough to hold ice cream without crumbling apart, while still maintaining that perfect crunchy texture on the edges.
I developed this recipe after years of perfecting the balance between structure and indulgence, ensuring every bite tastes like a nostalgic trip to the ice cream parlor.
The magic happens with a few key techniques: using melted butter and brown sugar for a deeper caramel flavor, folding in banana puree for natural sweetness, and pressing the dough into a pan to create those signature crumbly layers.
The cookies bake just until set, then get topped with ice cream while still warm, creating a sandwich that's crispy on the outside and creamy in the middle. This isn't just dessert—it's an experience that transforms a simple cookie into something extraordinary.
What you'll end up with is a dessert that looks as impressive as it tastes—golden, crumbly edges framing pockets of vanilla ice cream, all held together by layers of chocolate and banana flavor.
The texture is what makes this recipe special: each bite delivers a perfect contrast between the crispy cookie crumbles and the cool, creamy ice cream. It's the kind of dessert that disappears quickly, leaving only crumbs and happy faces behind.
Serve these as individual treats for parties or as a showstopping centerpiece for any dessert table. The possibilities for customization are endless—add caramel drizzle, crushed nuts, or fresh berries to elevate them even further. Let's get baking!
Ingredients for banana split crumbl cookie
Simple ingredients transform into nostalgic banana split magic with crispy edges and creamy centers.
| Ingredient | Amount | Notes |
|---|---|---|
| Unsalted Butter 🧈 | ¾ cup | Melted, full-fat for richness |
| Packed Brown Sugar 🍯 | 1 cup | Light or dark, packed tightly |
| Granulated Sugar 🍚 | ½ cup | For balanced sweetness |
| Ripe Bananas 🍌 | 2 large | Mashed into puree |
| Large Eggs 🥚 | 2 whole | Room temperature preferred |
| Vanilla Extract 🥛 | 1 tbsp | Pure, high-quality extract |
| All-Purpose Flour 🌾 | 1 ½ cups | Sifted for even texture |
| Baking Soda 🧂 | ½ tsp | For leavening action |
| Salt 🧂 | ½ tsp | Fine sea salt preferred |
| Unsweetened Cocoa Powder 🍫 | ¼ cup | Natural, not Dutch-processed |
| Mini Vanilla Ice Cream 🍦 | 1 ½ cups | High-fat, creamy variety |
| Chocolate Chips 🍫 | ½ cup | Semi-sweet, chopped fine |
| Crushed Nuts 🥜 | ¼ cup | Optional walnuts or pecans |
The bananas are the secret to that authentic banana split flavor—use ripe but not mushy ones for perfect sweetness. Trader Joe's or Whole Foods carry consistently sweet bananas year-round, but any grocery store's produce section works. For the butter, Land O'Lakes or Plugrá are reliable brands, but any unsalted butter will do. The cocoa powder matters too—natural cocoa (like Hershey's or Ghirardelli) gives that rich chocolate flavor without being bitter. Pro tip: measure your bananas by weight (about 10 oz for 2 large bananas) for consistency.
No vanilla extract? Vanilla bean paste works 1:1, or use 1 tsp vanilla sugar as a pinch-hitter. Running low on chocolate chips? Chop up a chocolate bar (70% dark works great) for a more intense flavor. The ice cream is non-negotiable for texture—high-fat brands like Breyers or Häagen-Dazs hold up best to the warm cookies. For a lighter option, use vanilla bean ice cream and reduce the amount to 1 cup. The crushed nuts are optional but add texture contrast—toasted pecans give the most flavor, but walnuts or almonds work too.
This dough keeps for 3 days in the fridge wrapped tightly, but it's best fresh. For make-ahead prep, bake the cookies one day ahead, cool completely, then store in an airtight container. The ice cream should be firm but scoopable when you assemble—let it sit at room temp for 10 minutes if it's frozen solid. Once assembled, these keep for 24 hours in the fridge, though they're best enjoyed fresh. Freezing isn't recommended—the ice cream gets grainy.
Why You'll Love This Recipe
- No Mash Needed: I swear by this trick—just mash those bananas with a fork right in the bowl. No food processor, no sticky cleanup, just smooth, creamy texture that blends right into the dough. (Yes, even if they’re extra ripe.)
- Caramelized Crunch Magic: That buttery brown sugar crust? It’s the star. When the edges get golden and the center stays soft, you’ve got that perfect contrast—like a hug for your taste buds. Honestly, I’ve never met a cookie that delivers this kind of satisfaction in one bite.
- Breakfast or Dessert?: Seriously, these work anytime. Warm one up with a scoop of vanilla ice cream for a split, or pack a batch in the fridge for a grab-and-go snack with peanut butter. My kids ask for them at 7 AM and 7 PM—no judgment here.
- Pantry Staple Power: You’re using butter, sugar, eggs, and bananas—stuff you already own. No weird ingredients, no last-minute grocery runs. And the leftovers? They actually improve overnight, getting even more crumbly and delicious. My secret weapon for lazy days.
Step-by-step instructions for banana split crumbl cookies
Here's how to create these decadent ice cream sandwich cookies with perfect texture and rich flavor.
Cream Butter and Sugars Together
In a large mixing bowl, combine the 0.75 cup unsalted butter and 1 cup packed brown sugar with 0.5 cup granulated sugar. Use an electric mixer on medium speed for 3-4 minutes until the mixture becomes light and fluffy. You'll notice the color lighten significantly as air incorporates into the butter.
This creaming process is crucial for creating the signature crumbl texture. If the mixture doesn't double in volume or looks grainy, continue mixing for another 30 seconds. The butter should be completely smooth with no visible lumps.
Incorporate Bananas and Eggs
Add the 2 large ripe bananas (mashed into puree) and mix until fully combined. The mixture will appear slightly darker and more liquid. Then add the 2 whole large eggs, one at a time, mixing well after each addition.
Next, stir in the 1 tablespoon vanilla extract. The banana puree should be completely incorporated with no visible streaks. If the mixture seems too thick, you can add 1-2 teaspoons of milk (though we're not using it in this recipe, it's helpful for consistency).
Combine Dry Ingredients
In a separate bowl, whisk together the 1.5 cups all-purpose flour, 0.5 teaspoon baking soda, 0.5 teaspoon salt, and 0.25 cup unsweetened cocoa powder. Sift the dry ingredients together to remove any lumps and ensure even distribution.
Gradually add the dry ingredients to the wet mixture, mixing on low speed until just combined. Avoid overmixing—you should still see small flour streaks. This prevents the cookies from becoming tough. Fold in the 0.5 cup chocolate chips and 0.25 cup crushed nuts by hand using a spatula.
Prepare Cookie Dough for Assembly
Divide the dough into 4 equal portions (about 1 cup each) and roll each portion into a 12-inch circle on parchment paper. Place 0.375 cups mini vanilla ice cream (about 3 scoops) in the center of each circle. Gently press the edges of the dough over the ice cream to form a sandwich, sealing completely.
Place the assembled cookies on a baking sheet lined with parchment paper. Freeze for 15 minutes before baking to help maintain the ice cream's shape during baking. This chilling step is essential for preventing the ice cream from melting prematurely.
Bake to Golden Perfection
Preheat your oven to 350°F. Bake the cookies for 12-15 minutes until the edges are golden brown and the centers are set but still soft. The ice cream should be slightly melted but still hold its shape.
Remove from the oven and let cool on the baking sheet for 5 minutes before transferring to a wire rack. Serve immediately while the ice cream is still soft and creamy. For best results, enjoy these cookies within 30 minutes of baking when the ice cream is at its ideal texture.
Pro Tips For Making Banana Split Crumbl Cookie
- MEASURE BUTTER COLD: Take the unsalted butter straight from the fridge—no softening, no room-temperature nonsense. The cold butter creates flaky layers in these crumbl cookies, and skipping this step means you’ll end up with dense, sad cookies that taste more like cake. (Yes, even if you’re impatient like me.)
- MASH BANANAS WELL: Don’t just chop them—smash those ripe bananas until they’re smooth, with no visible chunks. I learned this the hard way: leftover banana bits burn faster and leave you with a cookie that’s half-cooked in spots. A fork works, but a potato masher gives you that perfect, even texture.
- USE ROOM-TEMP EGG: Let the eggs sit out for 30 minutes before cracking them into the mix. Cold eggs can cause the batter to curdle, and nobody wants lumpy banana crumbl cookies. Trust me, this small step makes the dough smoother and the cookies chewier—no extra effort, just better results.
- BAKE UNTIL GOLDEN: These cookies need that deep golden-brown color, not just "done-looking." Pull them out when the edges are crisp and the tops are crackly—any sooner, and they’ll taste underbaked and gummy. A toothpick should come out with minimal moist crumbs, not wet batter. (Your future self will thank you.)
Creative variations of these flavors
Banana Caramel Twist
Swap the vanilla ice cream for salted caramel ice cream and add a drizzle of homemade banana caramel sauce after baking. I make the sauce by simmering ½ cup heavy cream, ½ cup brown sugar, and 2 tbsp butter with 1 mashed banana until thickened.
Drizzle over warm cookies for that classic banana split flavor with extra decadence. 🍯
Chocolate-Dipped Edges
For a restaurant-worthy touch, dip the baked cookies' edges in melted dark chocolate (I use Ghirardelli 70% dark) before serving. Let the chocolate set for 10 minutes in the fridge, then drizzle with white chocolate for a marbled effect.
This adds a crispy chocolate shell that contrasts perfectly with the creamy ice cream. 🍫
Strawberry-Banana Fusion
Add ¼ cup fresh strawberry puree (blend and strain 6-8 strawberries) to the dough along with the banana puree. Top each cookie with thin strawberry slices before baking for a fruity twist. The strawberries caramelize slightly in the oven, creating a beautiful contrast with the vanilla ice cream. 🍓
Nutella Stuffed
Replace the ice cream with ¼ cup Nutella spread between two thin cookie layers. Press the dough into 8-inch circles, bake for 10-12 minutes, then sandwich with Nutella while warm.
The chocolate-hazelnut filling pairs perfectly with the banana flavor, creating a dessert that tastes like a cookie and ice cream hybrid. 🥜
Spiced Chai Version
Infuse the dough with 1 tsp chai spice blend (mix ½ tsp cinnamon, ¼ tsp cardamom, ¼ tsp ginger, and pinch of cloves) along with the vanilla extract.
Serve with chai-spiced ice cream (add 1 tsp chai blend to vanilla ice cream base) for a warm, aromatic twist that feels like dessert and tea in one bite. ☕
Mini Bites for Parties
Reduce the dough portions to make 1.5-inch mini cookies with 1 tbsp ice cream each. Bake at 375°F for 8-10 minutes for faster cooking. These bite-sized treats are perfect for parties—they're easy to grab, and the mini format makes them feel extra special.
Arrange on a platter with sprinkles or edible gold dust for a festive look. 🎉
Nutrition facts
Frequently asked questions
Why does the dough need to be chilled before baking?
The 15-minute freeze before baking is key to keeping the ice cream from melting too quickly. This gives the dough structure while maintaining that creamy center. If you skip chilling, the ice cream may turn to a soupy mess inside—trust the process! The cold also helps the cookies hold their shape better when they come out of the oven.
Can I make these cookies ahead of time?
Yes! Bake the cookies one day ahead and store them in an airtight container at room temperature. When ready to serve, simply add fresh ice cream between the cooled cookies. The texture won't be as perfect as freshly baked, but it's still delicious. For the best experience, assemble with ice cream just before serving.
What if my cookies turn out too crumbly?
Over-baking is the most common cause. These cookies should be golden but still soft in the center. If yours are too dry, try reducing bake time by 1-2 minutes next time. Also, make sure your ice cream isn't too warm when assembling—it should be firm but scoopable. If the dough seems too crumbly, add 1 tsp milk when mixing.
Can I use store-bought cookie dough?
Not recommended! The banana puree and special crumbly texture come from the homemade dough. However, you could try pressing store-bought chocolate cookie dough around ice cream, but it won't have the same rich banana-chocolate flavor profile. For best results, stick with the recipe as written.
How do I make these without an ice cream sandwich?
For a no-ice-cream version, bake the cookies as directed, then slice them into wedges. Serve with a side of banana pudding or whipped cream for dipping. The crumbly texture works perfectly with other creamy toppings too! This makes a great make-ahead dessert for parties.