Home » Recipes » Mashed Potato or Potato Chip-Topped Mushroom and Tuna Casserole Suggestions? Mashed Potato or Potato Chip-Topped Mushroom and Tuna Casserole - Recipe Cost Cost information for the following is not included. Normally this is because the quantity or ingredient is unknown or 2 cups crushed potato chips 1 cup fresh button mushrooms, chopped coarsely 2 to 3 tbsp hot sauce-optional salt/pepper Ingredients Per Serving Qty Common Price Price per Serving 4 large Idaho potatoes, washed, peeled, cut into even pieces to boil for mashed potatoes 2/3 potatoes $0.50 per pound $0.27 3 tbsp butter 1 1/2 teaspoons $3.99 per 16 ounces $0.06 ½ cup milk 1 tablespoon $3.49 per gallon $0.02 2 tsp olive or canola oil 1/3 teaspoon n/a ½ onion, finely chopped 0.08 onion $0.79 per pound $0.02 2 cloves garlic, minced 1/3 garlic cloves $4.00 per pound $0.01 1 tsp thyme or rosemary leaves (fresh or dry) 1/6 teaspoon $1.99 per cup $0.01 ½ cup green olives with pimentos, chopped-optional 1 tablespoon n/a 1 to 2 tsp cayenne, Old Bay or Cajun seasoning 1/4 teaspoon $3.65 per 3 ounces $0.02 1/3 cup heavy cream 2 2/3 teaspoons $3.89 per pint $0.11 2 cups canned tuna, drained 1/3 cup $2.69 per 12 ounces $0.41 3 tbsp cheddar cheese, shredded 1 1/2 teaspoons $6.99 per 32 ounces $0.03 Total per Serving $0.95 Total Recipe $5.69 Please Log In or Sign Up to edit Recipe Cost info Email Recipe Cost Send To Message (if any) or Close