Cheesy Mashed Potato Casserole

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  • 25 min prep time
  • 45 min total time
  • 8 ingredients
  • 14 servings


teaspoons butter or margarine
medium green onions, sliced (1/2 cup)
medium yellow or orange bell pepper, chopped (1 cup)
cups water
1 1/2
cups half-and-half or whole milk
tablespoons butter or margarine
pouches (4.7 oz each) roasted garlic mashed potato mix
1 1/2
cups shredded Cheddar cheese (6 oz)


  1. 1 Heat oven to 350°F. Spray 2-quart casserole with cooking spray.
  2. 2 In 10-inch nonstick skillet, melt 2 teaspoons butter over medium-high heat. Cook onions and bell pepper in butter 2 to 3 minutes, stirring occasionally. Remove from heat; set aside.
  3. 3 In 3-quart saucepan, heat water, half-and-half and butter to boiling; remove from heat. Stir in both pouches of potatoes just until moistened. Let stand about 1 minute or until liquid is absorbed. Beat with fork until smooth.
  4. 4 Spoon about 2 cups of the potatoes into casserole; top with half of the onion mixture and 3/4 cup of the cheese. Spoon another 2 cups potatoes over cheese; carefully spread to cover. Sprinkle evenly with remaining onion mixture. Top with remaining potatoes; carefully spread to cover. Sprinkle with remaining 3/4 cup cheese.
  5. 5 Bake uncovered about 30 minutes or until hot.




Nutrition Information

Recipe Step Photos

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