Double Chocolate Chip Cookie Bars

4.74 from 45 votes

This super simple recipe can be whipped up in no time. Serve them warm for an extra bit of indulgence!

Course Dessert

Cuisine Baking

Keyword Chocolate chip cookie bars, Cookie Bars Recipe, Double Chocolate Chip Cookie Bars

Prep Time 10

Cook Time 30

Total Time 40

Servings servings

Calories 505

Preheat oven to 350°F/180°C
Grease and flour an 8-inch square baking pan.
In a microwave-safe bowl, melt 1 cup of dark chocolate chips on medium power in 30-second intervals until just melted. Set aside.
In a large bowl, beat butter, brown sugar, and granulated sugar until creamy. Add melted chocolate and mix until combined.
Add egg and vanilla extract and mix to combine well.
Add the flour, cocoa powder, baking powder, and salt mix until blended
Stir in remaining cup of chocolate chips.
Spread the dough into the prepared pan and smooth the top. Bake for 30 minutes. After 30 minutes, give the pan a little shake. If it jiggles in the middle, put the pan back in and try again every 5 minutes until there is no longer any jiggle.
Allow to cool at least 15 minutes before serving.

(for more information on how to properly melt chocolate, see my guide on How to Melt Chocolate)

Don't overmix the dough - once you add the flour, mix the dough by hand. This will keep the chewy center. Overmixing will result in a more cake-like texture.
Be sure to preheat the oven. This will ensure an even bake.
For a gooey center, take the bars out of the oven when they still have a slight jiggle when you shake the pan.