01 -
Finely dice the yellow onion, mince the garlic, and chop the fresh parsley. In a large bowl, combine the Panko breadcrumbs, grated Parmesan, Italian seasoning, Kosher salt, and freshly ground black pepper. This preps your dry base for the best Slow Cooker Italian Meatballs.
02 -
To the prepared dry mixture, add the ground beef, lightly beaten egg, and whole milk. Now, gently incorporate the diced onion, minced garlic, and chopped parsley. Combine just until everything is evenly distributed throughout the mixture.
03 -
Gently mix the ingredients with your hands until just combined, being careful not to overmix. Form the mixture into approximately 1.5-inch meatballs. Overmixing can lead to tough meatballs, so handle them lightly to keep them tender.
04 -
Heat olive oil in a large skillet over medium-high heat. Briefly sear the formed meatballs until lightly browned on all sides, then transfer them to your slow cooker. Pour the good quality marinara sauce directly over the meatballs. Searing adds incredible depth of flavor.
05 -
Cover the slow cooker and cook your Slow Cooker Italian Meatballs on the low setting for 4-6 hours or on high for 2-3 hours. They are done when the meatballs are incredibly tender and the rich marinara sauce is bubbly and thoroughly heated.
06 -
Once cooked, ladle the Slow Cooker Italian Meatballs and rich marinara into bowls or over your favorite pasta. Garnish generously with fresh chopped basil and extra grated Parmesan cheese for a delightful, comforting finish.