1/2 c. softened butter
1/2 c. sugar
1 c. brown sugar
2 c. peanut butter
1/2 c. ketchup
1/3 c. eggs
2 c. flour
1 tsp. baking soda
1/2 tsp. salt

Beat together butter, sugars, and peanut butter. Add ketchup and eggs; mix well. Blend in flour, soda and salt. Drop onto ungreased cookie sheet. Criss cross with a fork. Bake at 350 degrees for 10 to 12 minutes.