The Best Onion Dip
- PREP 5min
- COOK 55min
- TOTAL 1hrs
Skip the prepackaged French onion soup mix and make this easy homemade onion dip instead. It’s easy to make, only requires five simple ingredients (two of which are salt and pepper), and tastes much better than anything you can buy at the store. This dip gets better over time, making this the perfect make-ahead appetizer!
You Will Need
1 medium-to-large sweet onion like Walla Walla or Vidalia, chopped small (2 ½ cups)
3 tablespoons salted butter, melted
1/4 teaspoon fine sea salt
1/8 teaspoon fresh ground black pepper
1 pint (16oz or 2 cups) sour cream
Directions
Preheat the oven to 375°F (190°C). Line a small baking sheet with parchment paper or use a large baking dish.
Toss the chopped onions with the melted butter and spread them into a thin layer on the baking sheet.
Roast, stirring every 10 minutes, until the onions are soft, smell sweet, and turn a light golden color, 50 to 60 minutes. Keep a closer eye towards the end of the cooking time to ensure the onions do not overbrown.
Transfer the onions while they are still hot to a mixing bowl and scrape all the butter left in the pan into the bowl with the onions.
Stir in the salt, pepper, and sour cream.
Cover and refrigerate overnight, and then serve. The dip will last up to 4 days in the fridge. Stir well before serving.
Adam and Joanne's Tips
- Caramelize onions on the stove instead of in the oven: Slice the onions into thin half-moons. Melt the butter in a wide pot over medium heat, add the onions, cover with a lid, and cook, over medium heat, until the onions look translucent, 12 to 15 minutes. Uncover the pot, and continue to cook the onions, stirring occasionally and scraping up any stuck browned bits from the bottom and sides. The onions take 45 to 60 minutes to caramelize. Keep a close eye on them. When you notice they begin to brown, stir them more often to keep them from burning. When they are golden and smell caramelized, mix into the sour cream mixture. Watch us caramelize onions in our French onion soup video.
- Vegan alternatives: Swap the sour cream for vegan sour cream or use cashew cream. Use a plant-based butter when cooking the onions.
- The nutrition facts provided below are estimates.