INGREDIENTS
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6 crusty submarine, hoagie, or french buns (8 inches)
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1 pound ground beef
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1 cup spaghetti sauce
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1 Tbsp garlic powder
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1 Tbsp Italian seasoning
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1 cup ricotta cheese
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1/4 cup grated Parmesan cheese
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1 cup shredded cheddar cheese, divided
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1 cup shredded mozzarella cheese, divided