### Brownie Cookie Dough Bars Recipe

#### Description
Indulge in the ultimate dessert with these decadent Brownie Cookie Dough Bars! Featuring a rich brownie base topped with a creamy cookie dough layer and finished with a luscious chocolate drizzle, these bars are perfect for satisfying your sweet tooth.

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### Ingredients

**For the Brownie Layer:**
– 1 cup (2 sticks) unsalted butter
– 2 cups granulated sugar
– 4 large eggs
– 1 teaspoon vanilla extract
– 1 cup all-purpose flour
– 1 cup unsweetened cocoa powder
– 1/2 teaspoon salt
– 1/2 teaspoon baking powder
– 1 cup semi-sweet chocolate chips

**For the Cookie Dough Layer:**
– 1/2 cup (1 stick) unsalted butter, softened
– 1/2 cup granulated sugar
– 1/2 cup brown sugar, packed
– 1 teaspoon vanilla extract
– 1 cup all-purpose flour
– 1/4 teaspoon salt
– 1/2 cup mini chocolate chips

**For the Topping:**
– 1/2 cup semi-sweet chocolate chips
– 1 tablespoon unsalted butter

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### Instructions

**Preparing the Brownie Layer:**
1. Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking pan or line it with parchment paper for easy removal later.
2. In a medium saucepan, melt the 1 cup of unsalted butter over low heat. Once melted, remove it from the heat and stir in the 2 cups of granulated sugar until well combined.
3. Add the 4 large eggs, one at a time, mixing well after each addition. Then stir in the 1 teaspoon of vanilla extract.
4. In a separate bowl, whisk together the 1 cup of all-purpose flour, 1 cup of unsweetened cocoa powder, 1/2 teaspoon of salt, and 1/2 teaspoon of baking powder.
5. Gradually add the dry ingredients to the wet ingredients, stirring until just combined. Be careful not to overmix!
6. Fold in the 1 cup of semi-sweet chocolate chips until evenly distributed throughout the batter.
7. Pour the brownie batter into the prepared baking pan, spreading it evenly with a spatula. Bake in the preheated oven for 20-25 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
8. Once baked, remove the brownies from the oven and let them cool in the pan on a wire rack while you prepare the cookie dough layer.

**Preparing the Cookie Dough Layer:**
1. In a large mixing bowl, cream together the 1/2 cup of softened unsalted butter, 1/2 cup of granulated sugar, and 1/2 cup of brown sugar until light and fluffy.
2. Add the 1 teaspoon of vanilla extract and mix until combined.
3. In another bowl, whisk together the 1 cup of all-purpose flour and 1/4 teaspoon of salt. Gradually add this to the butter and sugar mixture, mixing until just combined. Remember, we want that cookie dough texture!
4. Fold in the 1/2 cup of mini chocolate chips until evenly distributed throughout the cookie dough.
5. Once the brownies have cooled completely, spread the cookie dough layer evenly over the top of the brownies. You can use your hands or a spatula to help with this. It’s okay if the cookie dough is a little thick; just make sure it’s evenly distributed.

**Adding the Topping:**
1. In a small saucepan, melt the 1/2 cup of semi-sweet chocolate chips and 1 tablespoon of unsalted butter over low heat, stirring constantly until smooth and glossy.
2. Once melted, remove from heat and let it cool slightly before drizzling it over the cookie dough layer. You can use a spoon or a piping bag for more control over the drizzle.
3. After drizzling, you can sprinkle a few extra mini chocolate chips on top for added texture and visual appeal.

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### Notes
– Ensure the brownie layer is completely cooled before adding the cookie dough layer to prevent melting.
– For a fun twist, consider adding nuts or different types of chocolate chips to the brownie or cookie dough layers.

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### Prep Time
20 minutes

### Cook Time
25 minutes

### Total Time
45 minutes

### Yield
12-16 bars

Enjoy your delicious Brownie Cookie Dough Bars!