Brownie Cookie Bars combine the fudgy, cracked top of a classic brownie with the portable convenience of a cookie—delivered here as easy-to-serve bars. With Cinco de Mayo approaching, these bars are an ideal dessert when time is short: everything mixes in one pan and bakes quickly, making them perfect to grab and bring with you. I’ve added a Mexican-inspired twist using two warming spices: cinnamon and chili powder.
Cinnamon and chili powder are common in both savory and sweet Mexican dishes. The chili adds only a subtle warmth rather than heat, so it’s approachable even for those who prefer mild flavors. Together with cinnamon, it enhances the chocolate for a rich, slightly spiced profile.
Texture-wise, think of a cross between a dense brownie and a chewy chocolate cookie—fudgy, slightly soft, with melting pockets of chocolate chips and a background of cinnamon. After each bite, the chili’s warmth lingers. To complete the hot chocolate theme, the bars are finished with a marshmallow fluff frosting and a sprinkle of grated chocolate, which adds a playful, gooey topping.
More Cookie Bar Recipes
If you enjoy these bars, try these other cookie bar recipes:
- Chocolate Chip Cookie Bars
- Snickerdoodle Cookie Bars with Apple Butter Frosting
- Gingerbread S’mores Cookie Bars
- Coconut Lime Meltaway Cookie Bars
- S’mores Chocolate Chip Cookie Bars
Brownie Cookie Bars
16 squares
15 minutes
20 minutes
35 minutes
Fudgy brownie-style cookie bars topped with marshmallow fluff for a quick, crowd-pleasing dessert with Mexican-inspired spices.
Ingredients
- 1/2 cup (4 ounces or 8 tablespoons) unsalted butter, softened
- 2 ounces unsweetened baking chocolate, chopped
- 1 cup granulated sugar
- 1/4 cup unsweetened cocoa powder
- 1 large egg, room temperature
- 1 teaspoon vanilla extract
- 3/4 cup all purpose flour
- 1/2 teaspoon baking powder
- 1/2 teaspoon espresso powder (optional)
- 1/2 teaspoon cinnamon (optional)
- 1/2 teaspoon chili powder (optional)
- 1/4 teaspoon table salt
- 1/2 cup semisweet chocolate chips
Marshmallow Fluff Frosting
- 3/4 cup marshmallow fluff
- 1/2 cup (8 tablespoons or 4 ounces) unsalted butter, softened
- 1/2 cup powdered sugar, sifted
- 1 teaspoon vanilla extract
- Pinch of table salt
Instructions
- Preheat oven to 350°F (175°C). Lightly grease an 8×8-inch pan or line it with parchment paper. Set aside.
- In a large saucepan over low heat, melt the butter and chopped baking chocolate together. Remove from heat once smooth.
- Whisk in the granulated sugar, cocoa powder, the egg, and vanilla until combined.
- Switch to a rubber spatula and fold in the flour, baking powder, espresso powder (if using), cinnamon, chili powder, salt, and chocolate chips until just incorporated.
- Spread the batter evenly in the prepared pan. Bake 20–25 minutes, or until the center is set, the top is slightly cracked, and the edges pull away from the pan. Allow to cool completely before serving or frosting.
- For the marshmallow fluff frosting: In a large bowl, beat the marshmallow fluff and softened butter until smooth and fluffy, about 2–3 minutes. Scrape the bowl, then beat in the sifted powdered sugar, vanilla, and a pinch of salt until light and spreadable, another 2–3 minutes. Spread over cooled bars and grate a little chocolate on top if desired.
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8×8 Square Pan
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If you enjoyed these Brownie Cookie Bars, you may also like these recipes:
- Mexican Hot Cocoa Sandwich Cookies
- Chocolate Chili Spice Cookies
- Homemade Fajita Seasoning