Yields 30 meatballs

• 1 slice bread
• 1/4 cup milk
• 1 pound ground beef
• 1 small onion, grated
• 1 tablespoon sour cream
• 1 large egg
• 1/2 teaspoon salt
• 1/2 teaspoon ground black pepper
• 1/4 cup mayonnaise
• 3/4 cup shredded mozzarella cheese
• 1/4 cup grated Parmesan

Rest of Recipe and Instructions HERE

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