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Keto Appetizers

French Onion Dip From Scratch

I always turn to this keto French onion dip when I need a crowd-pleasing appetizer that doesn’t compromise on flavor. It’s made from scratch with deeply caramelized onions, rich sour cream, and creamy mayonnaise—no packet mixes needed. Perfect for parties or a cozy night in, this dip pairs beautifully with crunchy low-carb vegetables and keeps everyone reaching for more.

15 min Prep time 25 min Cook time 40 min Total time 4 Servings 350 Calories
French Onion Dip From Scratch

Ingredients

  • tablespoons olive oil
  • /2 cups chopped onion
  • /4 teaspoon kosher salt
  • cup sour cream
  • cup mayonnaise
  • /2 teaspoon garlic powder
  • /4 teaspoon ground white pepper
  • /2 teaspoon kosher salt

Instructions

  1. Step 1

    Start by heating the olive oil in a large skillet over medium heat. Add the chopped onions with 1/4 teaspoon of kosher salt, and let them cook slowly, stirring often. I like to keep the heat gentle—caramelizing takes about 20 minutes, but that deep golden color is worth every minute. Once the onions are sweet and browned, set them aside to cool completely. In a mixing bowl, combine the sour cream, mayonnaise, garlic powder, white pepper, and the remaining 1/2 teaspoon of salt. Stir until smooth and well blended. Then fold in the cooled onions, making sure they’re evenly distributed. Cover the bowl and refrigerate for at least 2 hours—this resting time allows the flavors to meld into that classic French onion dip taste. When you’re ready, give it a final stir and serve with celery sticks, cucumber slices, or pork rinds. I sometimes let it sit overnight for an even richer result.

Chef's Tip

For an extra layer of savory depth, I deglaze the skillet with a splash of beef broth after caramelizing the onions. It adds a subtle richness that mimics the slow-cooked flavor of traditional French onion soup and makes this dip truly unforgettable.

Storage Tips

Store leftover dip in an airtight container in the refrigerator for up to 4 days. The flavors meld and deepen, making it even more delicious the next day. Give it a good stir and serve chilled—no reheating required, and it stays perfectly creamy.

Variation Tips

For a lighter version, swap half the mayo with Greek yogurt—it adds a tangy kick while keeping the texture creamy. Serve with crisp bell pepper strips, cucumber rounds, or keto crackers. For a bolder flavor, fold in a teaspoon of Worcestershire sauce or crumbled bacon before chilling.

Frequently Asked Questions