Sheet Pan Brownie Cookie Bar with Chocolate Chunks
A decadent dessert that combines chewy brownies and soft chocolate chip cookies baked together on one pan for an easy crowd-pleaser. This american-inspired desserts ready in about 55 minutes layers melted unsalted butter, granulated sugar, packed brown sugar into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 360 calories and feeds 12, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 1 cup, melted unsalted butter
- 1 1/4 cups granulated sugar
- 3/4 cup, packed brown sugar
- 2 large eggs
- 2 tsp vanilla extract
- 1 1/4 cups all-purpose flour
- 3/4 cup unsweetened cocoa powder
- 1/2 tsp baking powder
- 1/4 tsp salt
- 1 cup semi-sweet chocolate chunks
- 1 1/2 cups all-purpose flour for cookie dough
- 1/2 tsp baking soda
- 1/4 tsp salt for cookie dough
- 1/2 cup, softened unsalted butter for cookie dough
- 1/2 cup granulated sugar for cookie dough
- 1/2 cup, packed brown sugar for cookie dough
- 1 large egg for cookie dough
- 1 tsp vanilla extract for cookie dough
- 1 cup semi-sweet chocolate chips for cookie dough
Instructions
- Step 1: Preheat oven to 350°F and grease a 9x13-inch sheet pan with 1 tbsp unsalted butter.
- Step 2: In a large bowl, whisk together 1 cup melted unsalted butter, 1 1/4 cups granulated sugar, and 3/4 cup packed brown sugar until combined; add 2 large eggs and 2 tsp vanilla extract, beating until smooth.
- Step 3: Sift in 1 1/4 cups all-purpose flour, 3/4 cup unsweetened cocoa powder, 1/2 tsp baking powder, and 1/4 tsp salt; fold gently until the brownie batter is uniform, then stir in 1 cup semi-sweet chocolate chunks.
- Step 4: Spread the brownie batter evenly into the prepared sheet pan.
- Step 5: In a separate bowl, whisk 1 1/2 cups all-purpose flour, 1/2 tsp baking soda, and 1/4 tsp salt for the cookie dough.
- Step 6: Using an electric mixer, cream together 1/2 cup softened unsalted butter, 1/2 cup granulated sugar, and 1/2 cup packed brown sugar for the cookie dough until light and fluffy.
- Step 7: Beat in 1 large egg and 1 tsp vanilla extract into the cookie dough, then gradually add the flour mixture, mixing until just combined.
- Step 8: Fold in 1 cup semi-sweet chocolate chips into the cookie dough, then dollop spoonfuls evenly on top of the brownie batter, gently spreading to cover most of the surface.
- Step 9: Bake the sheet pan for 30-35 minutes until the cookie topping is golden and a toothpick inserted into the brownie layer comes out with moist crumbs.
- Step 10: Cool completely in the pan on a wire rack before slicing into bars and serving.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Sheet Pan Brownie Cookie Bar with Chocolate Chunks take to make?
Total time is about 55 minutes (20 min prep + 35 min cook). Most home bakers find this fits a weekend afternoon; chill or store as the recipe directs before serving.
How do I store leftover Sheet Pan Brownie Cookie Bar with Chocolate Chunks?
Cool fully before storing. Most baked desserts keep at room temperature in an airtight container for 2–3 days, or in the fridge for up to 5 days. Cream- or custard-based desserts must go in the fridge within 2 hours; reheat gently or serve cold per the recipe.
Can I substitute ingredients in Sheet Pan Brownie Cookie Bar with Chocolate Chunks?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Sheet Pan Brownie Cookie Bar with Chocolate Chunks for a different number of people?
The recipe is written for 12 servings. Multiply each ingredient by (your serving target / 12). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
What goes well with Sheet Pan Brownie Cookie Bar with Chocolate Chunks?
American desserts like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.
