Peanut Butter Bars

• 1 cube butter or margarine
• 1/2 cup white sugar
• 1/2 cup brown sugar
• 1 large egg
• 1/3 cup peanut butter or sun butter, or cashew butter
• 1/2 tsp vanilla extract
• 1 cup Sun Flour Mills Whole Grain All Purpose Flour
• 1 cup rolled gluten free oats
• 1/2 tsp baking soda
• 1/4 tsp salt
• 1 cup chocolate chips

For frosting

• 1/4 cup peanut butter
• 1 cup powdered sugar
• 3 Tbsp milk or vanilla rice milk
• Optional: nuts