"Cheddar mashed potatoes give this ground beef and vegetable casserole cheeseburger-like flavor...."
INGREDIENTS
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1 1/2 pounds russet potatoes, peeled and cut up
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1/2 cup light sour cream
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1/4 cup milk
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1/2 teaspoon salt
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1 cup shredded cheddar cheese (4 ounces)
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1 1/2 pounds lean ground beef
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1 medium red sweet pepper, chopped (3/4 cup)
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1 medium onion, chopped (1/2 cup)
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2 cloves garlic, minced
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1 6 ounce can tomato paste
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1 cup water
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1/2 12 ounce package frozen whole kernel yellow corn (1 1/2 cups)
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1/2 cup coarsely chopped dill pickle
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1/4 cup yellow mustard
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1 teaspoon dried oregano, crushed
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Shredded cheddar cheese
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Sliced green onions and/or crisp-cooked bacon (optional)