Slow Cooker Meatballs Marinara (Printer-Friendly)

Tender meatballs slowly cooked in a flavorful marinara sauce, ideal for easy entertaining or family dinners.

# What You'll Need:

→ Meatballs

01 - 1.5 lbs ground beef (80/20)
02 - 0.5 lb ground pork
03 - 0.5 cup Italian breadcrumbs
04 - 0.33 cup grated Parmesan cheese
05 - 2 large eggs
06 - 0.25 cup whole milk
07 - 3 cloves garlic, minced
08 - 2 tablespoons fresh parsley, chopped
09 - 1.5 teaspoons salt
10 - 0.5 teaspoon black pepper
11 - 1 teaspoon dried oregano
12 - 0.5 teaspoon crushed red pepper flakes

→ Marinara Sauce

13 - 48 fluid ounces marinara sauce
14 - 1 small onion, finely chopped
15 - 2 cloves garlic, minced
16 - 1 tablespoon olive oil
17 - 1 teaspoon dried basil
18 - 1 teaspoon dried oregano
19 - Salt and pepper to taste

# Step-by-Step Guide:

01 - In a large mixing bowl, combine ground beef, ground pork, breadcrumbs, Parmesan, eggs, milk, garlic, parsley, salt, pepper, oregano, and red pepper flakes. Mix gently until just combined, being careful not to overmix.
02 - Shape mixture into 1.5-inch balls and place on a parchment-lined baking sheet.
03 - For firmer meatballs with enhanced flavor, broil on high for 3 to 4 minutes, turning once, until lightly browned. This step is optional and can be skipped.
04 - In a skillet over medium heat, warm olive oil. Add onion and garlic; sauté for 3 to 4 minutes until softened and fragrant.
05 - Add sautéed onion and garlic, marinara sauce, basil, oregano, salt, and pepper to the slow cooker. Stir to combine thoroughly.
06 - Gently nestle the meatballs into the sauce in the slow cooker.
07 - Cover and cook on LOW for 4 hours (or HIGH for 2 hours), until meatballs are cooked through with an internal temperature of 160°F.
08 - Serve hot, garnished with extra Parmesan and parsley if desired.

# Expert Tips:

01 -
  • You can have them ready in 25 minutes of actual work, then disappear for four hours guilt-free.
  • They work as an elegant appetizer with toothpicks or transform into dinner over pasta without apology.
  • The slow cooker keeps them impossibly tender—no dry meatballs lurking here.
  • People always ask for the recipe, which is somehow satisfying even though you barely did anything.
02 -
  • Do not overmix the meat mixture—it activates the gluten in breadcrumbs and makes dense, rubbery meatballs that taste like failure.
  • The optional broil step genuinely improves flavor through caramelization, but skipping it still yields delicious results; this is permission, not pressure.
  • Using good quality marinara makes a difference you can taste; jarred works fine, but check the label to avoid unexpected ingredients.
03 -
  • Sautéing the onion and garlic first instead of adding them raw elevates the entire dish with minimal extra effort.
  • An instant-read thermometer removes guesswork—160°F internal temperature means cooked through but still tender.
  • The optional broil step really does make a difference in flavor depth if you have five minutes to spare.
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