Heat oven to 375°F.
Place paper baking cup in each of 12 regular-size muffin cups. Make cookie
dough as directed on pouch, using butter and 1 of the eggs.
Make brownie batter
as directed on box, using water, oil, and remaining 2 eggs for cakelike
brownies.
Place 1 tablespoon
cookie dough in bottom of each muffin cup. Using teaspoon sprayed with
cooking spray, press cookie dough to flatten in bottom of each cup. Cover
and refrigerate remaining cookie dough until ready to use.
Top cookie dough in
each cup with about 3 tablespoons brownie batter. Bake 22 to 25 minutes or
until toothpick inserted in center comes out almost clean. Cool 5 minutes;
remove from pan to cooling rack. Cool completely, about 45 minutes.
Meanwhile, drop
remaining cookie dough by rounded teaspoonfuls 2 inches apart on ungreased
cookie sheets. Bake 8 to 10 minutes or until edges are light golden brown.
Cool 1 minute; remove from cookie sheet to cooling rack. Cool completely,
about 15 minutes.
Spread cupcakes
with frosting. Crumble 3 baked cookies; sprinkle over frosted cupcakes.