Heat oven to 350 degrees. Stir peanut butter
until evenly mixed
throughout; measure after stirring. Combine brown
sugar, 1-1/4 cups
peanut butter and 1/2 cup butter in medium bowl;
mix until smooth. Stir
eggs; beat until well mixed. Combine flour,
baking powder and salt; stir
into peanut butter mixture. Stir until well
mixed. Pour into greased
13x9-inch baking pan.
Bake 25 to 30 minutes or until brownies begin
to pull away from
sides. Cool on wire rack.
Combine remaining peanut butter, remaining
butter, powdered sugar,
vanilla and 3 tablespoons milk. Beat until
smooth. Stir in remaining
milk until frosting is spreading consistency.
Spread over brownies.
Tip: Stir in 1-cup peanut butter morsels or semi-sweet chocolate morsels
if desired.
