For cookies:
1/2 cup Butter (softened)
1 cup Peanut butter
1 cup Sugar
2 Eggs
1 tsp Vanilla extract
1 1/2 cup Flour
1/4 tsp Baking soda
1 tsp Baking powder
1/4 tsp Salt
For frosting:
1/2 cup Butter
1 1/2 cup Powdered sugar
2 tsp Vanilla extract
2/3 cup Peanut butter
To make cookies, in large bowl, cream together butter, peanut butter and sugar until light and fluffy. Beat in eggs one at a time. Stir in vanilla extract. Combine flour, baking powder, baking soda and salt in another bowl and then gradually blend into creamed mixture. Drop dough by rounded teaspoonfuls onto greased baking sheets. Bake at 375 degrees F for about 10 minutes. Allow to cool before spreading with frosting.
To make frosting:
Melt butter and remove from heat. Beat in powdered sugar and vanilla extract. Mix well. Stir in peanut butter until smooth. Add milk if frosting becomes to thick to spread.