Ingredients

4 Tablespoon butter
4 Tablespoon flour
1/4 Teaspoon black pepper
2 1/2 Cup milk
2 Can tuna, drained
3/4 Cup sliced mushrooms
1/2 Cup sliced ripe olives, optional
1 4-ounce package potato chips, crushed

Instructions

Melt butter, stir in flour and pepper and stir until smooth. Cook for 2 minutes, stirring constantly. Add milk and stir until thickened. Combine the tuna, mushrooms, olives, if desired, and most of the package of crushed potato chips. Mix well and pour into a greased casserole dish. Top with remaining chips and bake at 350 degrees for 30 minutes or until heated through.