Optimal Spinach Prep
Wash fresh spinach thoroughly and pat completely dry before chopping finely to prevent excess moisture that could make meatballs soggy. Remove any thick stems for better texture and more even distribution throughout the mixture.
Expert Mixing Technique
Combine ground beef, chopped spinach, minced garlic, breadcrumbs, grated Parmesan, egg, Italian seasoning, salt, and pepper in large bowl, mixing gently with hands until just combined. Overmixing develops gluten and creates tough meatballs.
Strategic Cheese Preparation
Cut mozzarella block into uniform 1/2-inch cubes, ensuring consistent size for even melting and proper stuffing in each meatball. Pat cheese cubes dry to prevent slipping during assembly process.
Professional Stuffing Method
Scoop 1-2 tablespoons meat mixture and flatten in palm, place mozzarella cube in center, then carefully wrap meat around cheese, sealing edges completely. Roll gently between palms to create smooth, round shape without gaps.
Optimal Cooking Process
Heat olive oil in large skillet over medium heat until shimmering, then add meatballs in single layer without overcrowding. Cook 4-5 minutes per side, turning carefully to develop golden-brown crust on all surfaces while ensuring cheese stays contained.
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