Grandma Betty's Peanut Butter Fudge

Melt 3 Tbsp butter
3 tsp coca
3 cups sugar
1 cup milk

1) Combine all ingredients and boil for 3 minutes; pour into 3 large bowls
2) Per bowl; add 1tsp vanilla and 1 cup peanut butter
3) Mixture will set up FAST once peanut butter in, have maybe one minute to spoon mixture onto wax paper