You want an easy, hands-off dish that still tastes like a takeout favorite. Slow cooker Mongolian meatballs give you tender, saucy meatballs with a sweet-savory glaze and almost no fuss.
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This recipe lets you transform frozen or homemade meatballs into sticky Mongolian-style bites that work as a party appetizer or a simple weeknight dinner.
Follow along to get the slow cooker method, tips for serving with rice or noodles, and the best way to store leftovers so nothing goes to waste.
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Slow Cooker Mongolian Meatballs
You’ll learn what to buy, how to cook the meatballs step-by-step, how to make a sticky Mongolian-style sauce, and the best slow-cooker times and heat settings for tender results.
Ingredients
For the Meatballs (Choose one option):
- Option 1 (Homemade): 2 lbs ground beef, 1 cup Panko breadcrumbs, 2 large eggs (beaten), 4 cloves garlic (minced), 2 teaspoons fresh ginger (grated), 1/4 cup green onions (finely chopped), 2 tablespoons soy sauce, and 1/2 teaspoon black pepper.
- Option 2 (Easy): 2 lbs frozen pre-cooked meatballs (beef, turkey, or plant-based).
For the Mongolian Sauce:
- 1/2 cup soy sauce (low sodium preferred)
- 1/2 cup brown sugar, packed
- 3 cloves garlic, minced
- 1/2 cup beef broth or water
- 1 teaspoon fresh ginger, minced
- 1/2 teaspoon red pepper flakes (optional)
- 2 tablespoons cornstarch mixed with 2 tablespoons cold water (slurry)
For Garnish:
- Sliced green onions
- Sesame seeds
Instructions
If you are making the meatballs from scratch, begin by preheating your oven to 400°F (200°C) and lining a baking sheet with parchment paper.
In a large bowl, gently mix the ground beef, breadcrumbs, eggs, garlic, ginger, green onions, soy sauce, and pepper until just combined. Roll the mixture into 1-inch balls and place them on the baking sheet.
Bake for 12 to 15 minutes until browned and cooked through, then transfer them to the slow cooker. If you are using frozen meatballs, simply place the frozen meatballs directly into the slow cooker.
In a separate medium bowl, whisk together the soy sauce, brown sugar, beef broth, minced garlic, ginger, and red pepper flakes.
Pour this sauce mixture over the meatballs in the slow cooker and stir gently to ensure every meatball is well-coated.
Cover the slow cooker and cook on Low for 3 to 4 hours or on High for 2 hours. If you are using homemade meatballs that are already hot from the oven, you can aim for the shorter end of those time frames.
About 30 minutes before serving, whisk the cornstarch and cold water together in a small bowl to create a smooth slurry.
Stir this mixture into the slow cooker, covering it again to allow the sauce to thicken into a glossy glaze.
Once the sauce has thickened, give the meatballs a final stir. Serve them over a bed of white rice or noodles, finishing the dish with a generous sprinkle of sliced green onions and sesame seeds.
Sauce Preparation Tips
Balance salty and sweet by starting with equal parts soy sauce and brown sugar, then adjust. If the sauce feels too sharp, add a splash of water or 1 tablespoon of rice vinegar for brightness.
Use low-sodium soy sauce to control salt. If you like more depth, add 1 tablespoon hoisin or oyster sauce. For heat, stir in 1/4–1/2 teaspoon red pepper flakes or 1 teaspoon sriracha.
To prevent a thin sauce, dissolve cornstarch in cold water before adding. Add the slurry at the end and cook uncovered so the sauce reduces and thickens. Taste after thickening and tweak sweetness or salt as needed.
Cooking Time and Temperature Guide
For frozen meatballs: cook on LOW 5–6 hours or HIGH 2.5–4 hours. These ranges let the sauce infuse the meatballs without drying them out.
For fresh meatballs: cook on LOW 4–5 hours or HIGH 2–3 hours. If you brown fresh meatballs first, you can reduce cooking time by about 30–45 minutes.
If your slow cooker runs hot, check at the earlier end of the time range. For a thicker sauce, finish cooking uncovered for 15–30 minutes after adding the cornstarch slurry.
Always use a food thermometer for safety: meatballs should reach 160°F for beef/pork and 165°F for poultry.
Serving Suggestions and Storage
Mongolian meatballs work well as a main dish or an appetizer. You can serve them over rice, noodles, or on a platter with dipping sauces, and you can store leftovers safely for several days or freeze them for longer.
Side Dishes and Pairings
Serve the meatballs over steamed white rice, jasmine rice, or coconut rice to soak up the sauce. For a lower-carb option, try cauliflower rice or a bed of stir-fried vegetables.
Add simple steamed greens like broccoli, bok choy, or snap peas for color and crunch. Toss the vegetables with a little sesame oil and soy sauce to echo the meatball flavors.
For texture, sprinkle toasted sesame seeds and sliced green onions on top. Offer pickled cucumbers, kimchi, or thinly sliced carrots on the side to cut the sweetness.
If you want an appetizer board, place meatballs in a slow cooker set to warm and provide toothpicks and small bowls of extra sauce.
Storing and Reheating Leftovers
Cool meatballs to room temperature for no more than two hours, then refrigerate in an airtight container. Use within 3–4 days for best quality and food safety. Store sauce and meatballs together so the meatballs stay moist.
Reheat gently on the stovetop over low heat, stirring occasionally, until warmed through. You can also microwave single portions: cover loosely and heat in 30–45 second bursts, stirring between bursts.
If using the oven, place meatballs in a shallow dish, cover with foil, and bake at 325°F (160°C) until hot.
Make-Ahead and Freezer Tips
Freeze cooled meatballs in a single layer on a baking sheet, then transfer to a freezer bag to prevent sticking. Freeze sauce separately in freezer-safe containers if you want flexible thawing. Label bags with date; use within 3 months for best taste.
To reheat from frozen, thaw overnight in the refrigerator or reheat directly from frozen by simmering in a pot with some extra water or broth until fully heated.
If baking from frozen, cover and bake at 350°F (175°C) until steaming, then uncover to caramelize the sauce for a few minutes.
Follow my Slow Cooker recipes board on Pinterest.
