Sweet & Spicy Slow Cooker BBQ Sauce (Keto-Friendly!)

Dips & Sauces

March 10, 2026

The quest for the perfect homemade barbecue sauce ends here! Forget the sugar-laden store-bought stuff. This slow cooker recipe delivers a rich, smoky, tomato-based sauce with the ideal balance of sweet and spicy. It’s incredibly easy to make and is the perfect finishing touch for grilled meats, a delicious warm dip for sausages, or the secret weapon for your next rack of ribs. Let the slow cooker do the work and get ready for rave reviews!

Ingredients

• 2 tablespoons / 30 ml avocado oil
• 8 tablespoons / 113 g butter
• 1 (14.5-ounce) / 411 g can petite diced tomatoes, not drained
• 2 (6-ounce) / 340 g cans tomato paste
• ⅔ cup / 160 ml apple cider vinegar
• 1½ tablespoons granulated erythritol sweetener
• 4 teaspoons chili powder
• 4 teaspoons smoked paprika
• 4 teaspoons mustard powder
• 1 tablespoon dried minced garlic
• 1 teaspoon salt
• 1 teaspoon celery seeds
• 1 teaspoon onion powder
• ½ teaspoon ground black pepper
• ¼ teaspoon hot sauce
• ½ cup / 120 ml chicken broth

Instructions

1. Grease the interior of a small slow cooker with the avocado oil.
2. Add the butter and all remaining to the slow cooker. Stir thoroughly to combine everything.
3. Cover and cook on LOW for 2.5 to 3.5 hours. Once cooked, carefully use an immersion blender to puree the sauce directly in the stoneware until it’s nearly smooth.

Nutritional Information

• Serving Size: ¼ Cup
• Calories: 99
• Fat: 8 g (73%)
• Net Carbs: 6 g (24%)
• Protein: 2 g (8%)

Pro Tips

• If you don’t have an immersion blender, carefully transfer the hot sauce in batches to a regular blender. Be sure to vent the lid to allow steam to escape.
• Adjust the sweetness and heat to your liking. Add more erythritol for a sweeter sauce or a few extra dashes of hot sauce for a bigger kick after cooking.
• Store leftover sauce in an airtight container in the refrigerator for up to 2 weeks. The flavors will meld and deepen over time.

FAQ

Q: How long does this homemade barbecue sauce last
A: You can store this barbecue sauce in an airtight container in the refrigerator for up to 2 weeks. The flavors will continue to deepen over time.

Q: Can I make this barbecue sauce spicier
A: Yes, you can easily adjust the heat level. For a spicier sauce, simply add a few extra dashes of your favorite hot sauce after the sauce has finished cooking in the slow cooker.

Q: What if I don’t have an immersion blender
A: If you don’t have an immersion blender, you can carefully transfer the hot sauce in batches to a regular blender. Make sure to vent the lid to allow steam to escape safely while blending.

Q: Is this a sugar-free barbecue sauce recipe
A: Yes, this recipe is sugar-free. It uses granulated erythritol as a sweetener instead of sugar, making it a great low-carb and keto-friendly option.

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