"This ground beef casserole recipe is super easy to throw together and feeds a crowd! It's comforting and uses simple ingredients...."
INGREDIENTS
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1 pound uncooked penne
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1/2 medium onion (chopped)
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1 pound extra lean ground beef
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1 tablespoon olive oil
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1 clove garlic (minced)
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1.5 cups marinara sauce
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Salt & pepper (to taste)
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1.5 cups shredded cheddar cheese