Natasha's Out-Of-This World Instant Pot® Meatballs
Ingredients:
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1 pound ground beef
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1 pound ground pork
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1 small onion, finely chopped
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1 tablespoon minced garlic
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1 tablespoon Italian seasoning
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salt and ground black pepper to taste
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1 ¼ cups bread crumbs
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¼ cup milk, or more as needed
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2 tablespoons mayonnaise
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3 (30 ounce) jars marinara sauce, or as needed
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1 cup water