Slow Cooker Sweet and Sour Chicken Meatballs (Whole30, Paleo, GF)

These slow cooker sweet and sour chicken meatballs are paleo, gluten-free, and easily adapted to Whole30. Prep takes under 20 minutes, then the crock pot finishes the work. They make a quick weeknight dinner or convenient meal-prep option for healthy lunches, delivering the familiar sweet-and-sour flavors you love from Chinese takeout in a nourishing, family-friendly format.

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Ingredients for Slow Cooker Sweet and Sour Chicken Meatballs

For the meatballs, you’ll need two pounds of ground chicken and a gluten-free binder such as almond flour. If you have a tree-nut allergy, cassava flour can be substituted. Add minced garlic, salt, and black pepper and mix to form the meatball mixture. This recipe is egg-free and relies on the flours and the chicken’s natural texture to hold the meatballs together.

The sweet-and-sour sauce relies on pineapple juice from canned pineapple, coconut aminos, a mild vinegar (rice or white wine), and a sugar-free ketchup to provide that familiar tangy base. Primal Kitchen’s Whole30-approved ketchup works well here because it provides ketchup-like flavor without added sweeteners, making it ideal for Whole30 or paleo versions of Asian-inspired sauces.

A pinch of Chinese five-spice powder brings warm, aromatic depth to the sauce — a little goes a long way. Use arrowroot powder to thicken the sauce at the end of cooking; it’s a paleo- and Whole30-friendly option that creates the glossy texture you expect from sweet-and-sour sauces.

How to Prep the Meatballs and Sauce

Prepping this slow cooker recipe has two simple parts: preparing the meatballs and mixing the sauce. Start by chopping the red onion and red bell pepper into roughly 1-inch pieces and set them aside. In a large bowl, combine the ground chicken, almond (or cassava) flour, minced garlic, salt, and black pepper. Use your hands to mix until evenly combined.

Form the mixture into meatballs and place them directly into the slow cooker. They can touch and may form a second layer, but avoid crowding them into a single compact mass. Scatter the chopped onion and red pepper over the meatballs.

In a bowl, whisk together all the sauce ingredients except the arrowroot: rice or white wine vinegar, sugar-free ketchup, pineapple juice, coconut aminos, minced garlic, and Chinese five-spice. Pour this sauce evenly over the meatballs and vegetables. Cover and cook on high for 2½–3 hours or on low for 5–6 hours. Add the canned pineapple chunks during the final 30 minutes of cooking so they warm through without losing texture.

When cooking finishes, transfer the meatballs, vegetables, and pineapple to a serving dish using a slotted spoon. In a small bowl, mix the arrowroot powder with cold water to dissolve it, then stir this slurry into the sauce left in the cooker. Stir for a minute or two while the sauce thickens, then spoon the glossy sauce over the meatballs before serving.

Serving Suggestions and Storage

Serve these meatballs over cauliflower rice or a vegetable rice for a paleo or Whole30 plate. If you aren’t following those protocols, steamed white rice works well too. Roasted or steamed vegetables such as broccoli, snow peas, or carrots make excellent sides and add color and crunch.

Store leftovers in an airtight container in the refrigerator for up to one week. These meatballs freeze well: portion them into freezer-safe containers, leaving an inch of headspace to allow for sauce expansion. Thaw in the refrigerator overnight before reheating gently on the stovetop or in the oven.

Other Asian-Inspired Whole30 Recipes to Try

Slow Cooker Cashew Chicken

Slow Cooker Mongolian Beef

Garlic Chicken Stir Fry

Sticky Asian Chicken Thighs

Slow Cooker Beef and Broccoli

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