Cookie Dough Brownies

I made these Cookie Dough Brownies at my Open House and I have been asked for the recipe so here it is!

1c. (6oz) semisweet Chocolate Chips
1/2 c. butter or margarine, softened
1c. sugar
3 eggs
1 tsp. vanilla
1 1/4 c. flour
1/4 tsp. baking soda
Cookie Layer
1/2 c butter or margarine
1/2 c packed brown sugar
1/4 c sugar
3 Tbsp milk
1 tsp vanilla
1c. flour
1c. chocolate chips (I used half chocolate and half butterscotch chips)
Directions:
Melt chocolate chips in microwave and cool slightly. Cream butter and sugar. Add eggs and vanilla; mix well. stir in melted chocolate. Combine flour and baking soda; add to batter. Spread into greased 13x9 pan. Bake at 350 for 16-22 mins.
In mixing bowl, cream butter and sugars. Beat in milk and vanilla. Gradually add flour. Stir in chocolate chips. Carefully spread over cooled brownies. Store in refrigerator. Cookie layer is not baked and does not contain eggs.