1 cup all-purpose flour
1/4 cup packed brown sugar
1/2 cup butter
1/4 cup miniature semisweet chocolate pieces
1-1/3 cups granulated sugar
3/4 cup all-purpose flour
1/2 cup unsweetened cocoa powder
1-1/2 teaspoons baking powder
1/2 teaspoon salt
1/3 cup butter, melted
1 tablespoon vanilla
1/2 cup miniature semisweet chocolate pieces
Preheat oven to 350 degree F.
Line a 9x9x2-inch baking pan with foil; set aside.
In a medium mixing bowl stir together 1 cup flour and the brown sugar.
Cut in the 1/2 cup butter until mixture resembles coarse crumbs.
Stir in the 1/4 cup chocolate pieces.
Press into prepared pan.
Bake for 8 minutes.
Meanwhile, in a large mixing bowl stir together granulated sugar, 3/4 cup flour, the cocoa powder, baking powder, and salt.
Add eggs, melted butter, and vanilla; beat by hand until smooth. Stir in the 1/2 cup chocolate pieces.
Carefully spread over crust in pan.
Bake 40 minutes more.
Cool brownies in pan on a wire rack.
Lift brownies out of pan by lifting up on foil. Cut into bars.