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Slow Cooker Sweet and Sour Meatballs

Published on August 03, 2026
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Slow Cooker Sweet and Sour Meatballs
Prep: 15 mins
Cook: 240 mins
Difficulty: Easy
Servings: 10 Servings

Show up at your next potluck with a big pot of meatballs, swimming in a glossy sweet and tangy sauce, and everyone’s going to be excited. That’s just what meatballs have the power to do.

Ingredients

  • 1/4 cup cornstarch
  • 3 tablespoons water
  • 1 cup unsweetened pineapple juice
  • 1/2 cup rice vinegar
  • 2 tablespoons soy sauce or tamari
  • 1/4 cup ketchup
  • 1/4 cup packed light brown sugar
  • 1/2 large yellow onion, cut into 1-inch pieces
  • 1 large red or green bell pepper, cored, seeded, and cut into 1-inch pieces
  • 1 large egg
  • 1/2 cup panko breadcrumbs
  • 1/4 cup whole or 2% milk
  • 2 teaspoons kosher salt
  • 1 teaspoon ground ginger
  • 1/4 teaspoon freshly ground black pepper
  • 2 pounds lean ground beef
  • 1/2 large yellow onion, finely diced
  • 3 cloves garlic, minced
  • 2 medium scallions (green parts only), thinly sliced

Instructions

  1. Make the sauce:
  2. Place the cornstarch and water in a small bowl and whisk until completely dissolved. Transfer to a 5-quart or large slow cooker. Add the pineapple juice, vinegar, soy sauce, ketchup, and brown sugar and stir to combine. Add the onion and bell pepper and stir to combine. Cover and turn on to the LOW setting while you make the meatballs.
  3. Make the meatballs:
  4. Whisk the egg in a large bowl. Add the breadcrumbs, milk, salt, ginger, and pepper and stir to combine. Add the ground beef, onion, and garlic. Use your fingers to work the mixture together just until all the ingredients are evenly combined. Do not overwork.
  5. Scoop out about a tablespoon of the meatball mixture and roll into balls in palm of your hands. Place in the slow cooker. Repeat until all the meatballs have been shaped. The meatballs will not be completely submerged with the sauce. Gently stir and scoop a little sauce over the top so that they're coated.
  6. Cover the slow cooker and cook until the meatballs are no longer pink at the center, 3 to 4 hours on the LOW setting. Gently stir, top with the scallions, and serve warm.

Recipe Stats

  • Aug 03, 2026
  • Prep: 15 mins
  • Cook: 240 mins
  • Servings: 10 Servings
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wellcuratedhome