Ingredients for the Cookie Dough:
- 1/2 cup (1 stick) unsalted butter, melted and slightly cooled
- 3/4 cup light brown sugar, lightly packed
- 1/4 cup granulated sugar
- 1 large egg
- 1 large egg yolk
- 1 teaspoon vanilla extract
- 1 3/4 cups all-purpose flour
- 1/2 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup semi-sweet chocolate chips
Ingredients for the Brownies:
- 1 cup (2 sticks) unsalted butter
- 6 ounces semi-sweet chocolate, chopped or chips
- 1 1/2 cups granulated sugar
- 4 large eggs
- 1 teaspoon vanilla extract
- 1 1/2 cups all-purpose flour
- 1/4 teaspoon salt
Directions for the Cookie Dough:
- In large bowl, stir together melted butter, brown sugar and granulated sugar. Add egg and egg yolk one at a time, stirring vigorously for 1 minute after each addition. Batter should turn pale in color. Stir in vanilla extract. Add flour, baking soda and salt, stir until incorporated. Stir in chocolate chips.
- Use medium scoop or spoon to portion cookie dough into balls. Place on small sheet pan and refrigerate while brownie batter is prepared.
Directions for the Brownies:
- Preheat oven to 350°F. Line 9×13-inch baking dish with parchment paper.
- In medium saucepan over medium heat, melt butter and chocolate until smooth. Remove from heat and stir in sugar. Add eggs one at a time, stirring after each. Stir in vanilla extract. Add flour and salt, stir until incorporated.
- Spread brownie batter evenly over bottom of prepared pan. Drop chilled cookie dough balls into brownie batter, gently pressing down so they rest on bottom of pan.
- Bake until brownies are set and tops of exposed cookie dough are golden brown, about 35-40 minutes. Let cool completely before slicing.