"Southern Living; given to me by my MIL. Husband's favorite...."
INGREDIENTS
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6 slices bacon
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2 lbs ground beef
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1 small onion, chopped
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1 cup catsup
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1 (4 ounce) jar sliced mushrooms, drained
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salt and pepper
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2 cups shredded cheddar cheese
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8 hamburger buns