1/2 c. plus 1 tbsp. butter, softened
1/4 c. plus 2 tbsp. creamy peanut butter
1 1/2 c. firmly packed brown sugar
3/4 tsp. vanilla
3 eggs
1 1/2 c. flour
2 1/2 tsp. baking powder
1/4 tsp. salt
3/4 c. milk

Cream butter and peanut butter. Slowly add sugar, beat until light and fluffy. Stir in the vanilla. Add the eggs, one at a time, beat well after each. Combine flour, baking powder and salt, add to creamed mixture, alternately with milk, begin and end with flour mixture. Grease and paper-line bottom (not sides) of a tube pan. Pour in the pan and bake at 325 degrees for 1 hour. Test to see if it is done with a toothpick to see if it comes out clean. Cool in pan 10 minutes. Remove from pan and cool on a rack. Ice if necessary.