Slow cooker sweet and sour meatballs are tender, saucy, and full of flavor, with a tangy-sweet homemade sauce made from pineapple, peppers, and onion.
This is one of my family’s favorite easy weeknight dinner. It doubles as a crowd-pleasing appetizer that comes together with simple ingredients.
Cooked low and slow in the crockpot, this delicious slow cooker sweet and sour meatballs recipe is perfect if you love a balance of sweet, tangy, and savory flavors.
The sauce is glossy and flavorful, coating every meatball, while the peppers and onions become tender, adding both sweetness color to the dish.
For more crowd-friendly slow cooker meatballs, try our crockpot Hawaiian meatballs or crockpot Asian sesame meatballs. If you’re in the mood for poultry, sweet and sour chicken is another family favorite.
The best part…
- Frozen meatballs reduces prep time and yields consistency results.
- The sauce thickens naturally in the crockpot as it cooks.
- Works as both a party appetizer and a full meal when served over rice.
- The colorful peppers and pineapple adds flavor and texture that everyone loves including picky eaters.
Ingredients
- Frozen meatballs: They hold their shape and absorb the sauce perfectly. Plain varieties let the sweet and sour flavors shine.
- Pineapple chunks and juice: Adds sweetness and a bit of tang, while the juice forms the base of the sauce.
- Bell peppers and onion: adds color, and a mild savory note that balances the sweetness.
- Brown sugar and granulated sugar: Layered sweetness for depth and balance in the sauce.
- Apple cider vinegar: Gives a gentle tang that keeps the sauce bright.
- Ketchup: Adds mild acidity, and a rich coating for the meatballs.
- Soy sauce: Provides salt and umami to round out the flavors.
- Cornstarch: Thickens the sauce so it clings to the meatballs without being gummy.
- Sliced green onions: Fresh garnish for color and mild onion flavor.
* Need to print out this recipe? You’ll find a printable recipe card at the end of this post. Enjoy!
How to make crock pot sweet and sour meatballs
Combine the pineapple juice, apple cider vinegar, brown sugar, granulated sugar, ketchup, soy sauce, and cornstarch first, whisking until smooth so the sauce thickens evenly in the slow cooker.
Arrange the frozen meatballs in the crockpot, then scatter the pineapple chunks, bell peppers, and onion over the top.
Pour the sauce over the meatballs and vegetables, making sure everything is coated.
Set the slow cooker to LOW and let it cook for 3 to 5 hours, allowing the flavors to meld and the sauce to turn glossy and thick.
About halfway through, give everything a gentle stir so the meatballs heat evenly and each one is fully coated in the sauce.
Substitutions & Variations
- Protein swap: Use turkey or chicken meatballs instead of beef.
- Homemade meatballs: Fresh or frozen homemade meatballs work, though cooking time may vary slightly.
- Make it Appetizer-only: Omit peppers and pineapple chunks, but keep pineapple juice for the sauce.
Serve with
These sweet and sour meatballs are delicious over steamed white rice, jasmine rice, or even cauliflower rice.
They pair well with simple sides like roasted broccoli, sautéed green beans, or a fresh garden salad.
For parties, serve them on a platter with toothpicks and the sauce spooned over the top.
Storing and reheating leftovers
Cool completely before storing. Keep leftovers in an airtight container in the refrigerator for 3–4 days.
Reheat gently on the stovetop or in the microwave, stirring occasionally so the sauce warms evenly.
Helpful Tips
- If the sauce looks thin at first, don’t be in a hurry to add extra cornstarch. Wait until the last 30 minutes of cooking to adjust; otherwise, it can turn gummy.
- High heat cooks faster but reduces moisture too quickly. Use LOW for tender, juicy meatballs.
- Avoid heavily seasoned meatballs as these can overpower the sauce. Stick with plain or homestyle meatballs for a balanced flavor.
- Skipping the stir can lead to uneven thickening, so a gentle mix halfway through helps keep the sauce glossy and evenly coated.
- Do not overcrowd the slow cooker. Too many ingredients prevents proper heat circulation. Leave space for gentle bubbling so the sauce reduces correctly.
FAQs
No. Frozen meatballs go straight into the crockpot and cook evenly in the sauce.
Yes. It reheats well and can be kept warm in the slow cooker on the WARM setting for serving.
Sauce thickening usually happens toward the end. Removing the lid briefly after the meatballs are fully heated helps excess liquid evaporate.
Yes. Cooking on HIGH too long can dry them out. LOW heat lets the sauce thicken while keeping meatballs tender.
Crock pot sweet and sour meatballs are a simple, flavorful dish that works as a dinner or party appetizer.
With tender meatballs, a glossy tangy-sweet sauce, and colorful vegetables, this recipe is easy to make and sure to impress every time.
Happy cooking!
Love it? Pin it! Remember to follow @DeliciouslyHomeCooked on Pinterest for more recipes!
❤️ We’d love to hear from you!
Thank you for visiting our virtual kitchen! If you found this recipe helpful, don’t forget to share this recipe with family and friends.
Got questions? Please leave a comment.
Love this recipe? Please leave a comment.
Tried this recipe? Oh yes! Please leave a comment and a star 🌟🌟🌟🌟🌟rating too!
Looking for more tried and tested Home-cooked recipes? Sign up for our Newsletter and Follow along on Facebook, Instagram, Pinterestand Tiktok!
Love videos? Subscribe to our YouTube channel.
Crockpot Sweet and Sour Meatballs
Equipment
- Slow cooker (at least 5-quart)
- Whisk
Ingredients
- 36 ounces meatballs (frozen)
- 20- ounce pineapple chunks (Canned pineapple reserved the juice)
- 1 small red bell pepper (cut into 1-inch chunks)
- 1 small green bell pepper (cut into 1-inch chunks)
- 1 small onion (cut into 1-inch chunks)
- ½ cup brown sugar
- ¼ cup granulated sugar
- ⅓ cup apple cider vinegar
- ¼ cup ketchup
- 2 tablespoons soy sauce
- 2 tablespoons cornstarch
- Sliced green onions (for garnish)
Instructions
- In a large measuring cup or bowl, whisk together the reserved pineapple juice, apple cider vinegar, brown sugar, granulated sugar, ketchup, soy sauce, and cornstarch until smooth. Set aside.
- Add the frozen meatballs to the slow cooker, spreading them out in an even layer.
- Scatter the pineapple chunks, red bell pepper, green bell pepper, and onion evenly over the meatballs.
- Pour the prepared sauce over everything in the crockpot, making sure the meatballs and vegetables are well coated.
- Cover and cook on LOW for 3 to 5 hours, stirring once halfway through, until the meatballs are heated through and the sauce has thickened.
- Garnish with sliced green onions just before serving. Serve warm as an appetizer or spooned over white rice for a full meal.
Notes
- The sauce typically starts thickening around the 4-hour mark. If the meatballs are fully heated and you want a thicker sauce sooner, remove the lid and switch to HIGH for 15 to 20 minutes, stirring occasionally to prevent sticking.
- If you are planning to use these as appetizers, you can skip the pineapple, bell peppers, and onions. Replace the pineapple juice with ½ cup pineapple juice and ½ cup water to maintain the correct liquid amount.
- Plain frozen meatballs work best, such as homestyle, Angus beef, turkey, or chicken. Avoid heavily seasoned varieties like Italian-style meatballs, which can overpower the sauce.
- Homemade meatballs, fresh or frozen, also work well. If using fresh meatballs, cook on LOW for 4 to 6 hours and check that the internal temperature reaches 160–165°F.
Nutrition
