Roasted Onion Dip is a delicious savory dip made with roasted sweet onions, butter and sour cream. It’s also my new obsession. The search for new dip recipes is no longer necessary. This Sour Cream Onion Dip is the only one you need.
Skip the pre-packaged French onion soup mix and make this homemade onion dip instead. It’s easy to make, only requires five simple ingredients (two of which are salt and pepper), and tastes so much better.
Bonus, this dip gets better with time. So this is your answer if you want to prep a few days before a party or holiday like Thanksgiving. (I’m definitely making this dip for Thanksgiving this year).
How to make onion dip from scratch
Making onion dip from scratch couldn’t be easier. Here’s what you need to do:
- Cook onions with melted butter until soft and sweet
- Stir onions into sour cream with salt and pepper
- Refrigerate the dip overnight to allow the flavors to develop
For this onion dip we roast our onions. For some recipes, you caramelize the onions in a saucepan—like making French onion soup. This is an option, but the oven does it just fine for us. If you love fried onions as much as we do, check out our Whole Fried Onions recipe.
To roast the onions, mix them with melted butter, then fry until they smell sweet and soft. Roasting takes 50 to 60 minutes, but most of the time is homemade. You should only stir them every 10 to 15 minutes to ensure they toast evenly.
When your onions are done roasting, stir them into sour cream and season with salt and pepper. We don’t add mayonnaise or other ingredients. Honestly, the dip doesn’t need it. Trust me. This dip is perfect just the way it is.
I like to serve the dip with kettle chips, but it also goes great with raw veggies and even roasted veggies like these crispy potatoes or roasted broccoli.
I am so excited that you are trying this recipe! It’s one of my favorites from this year. It’s another recipe from Chef Richard Hattaway, and he nailed it. Try it soon. They will love it! If you love seafood, you’ll also love our recently added crab dip recipe. It’s delicious and can be served hot or cold.
frequently asked Questions
How long does onion dip keep in the fridge? You can store onion dip in the refrigerator for up to four days. In fact, it tastes better the longer it sits, since the sour cream has more opportunity to absorb the flavor of the roasted onions. When you’re ready to serve the dip, give it a good stir – you may notice some liquid from the onions has collected at the top. This liquid tastes amazing, so let’s stir it back into the dip.
Can onion dip be frozen? Unfortunately, we don’t recommend freezing sour cream and onion dip. Sour cream does not freeze and thaw well. While it’s okay to eat thawed frozen sour cream, the texture changes, making it less than ideal for a dip.
Easy Onion Dip (better than store bought)
- PREPARATION
Skip the pre-packaged 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 so much better. Sour Cream Onion Dip gets better with time, making it the perfect appetizer!
Makes 2 cups
you will need
1 medium to large sweet onion like Walla Walla or Vidalia, finely chopped (2 ½ cups)
3 tbsp butter, melted
1/4 teaspoon fine sea salt
1/8 teaspoon freshly ground black pepper
1 pint (16 ounces or 2 cups) sour cream
directions
Preheat the oven to 190°C.
Mix chopped onions with the melted butter and spread in a thin layer on a quarter sheet pan lined with parchment paper or use a 13 x 9 inch casserole dish.
Sauté every 10 minutes until onions are soft, smell sweet, and are beginning to turn a light golden color; 50 to 60 minutes. Towards the end of the cooking time, be careful not to over-brown the onions.
While still hot, add the onions to a mixing bowl and scrape the remaining butter in the pan into the bowl with the onions.
Stir in salt, pepper and sour cream.
Cover and refrigerate overnight and then serve. The dip will keep in the fridge for up to four days.
Advice from Adam and Joanne
- When you’re ready to serve the dip, give it a good stir – you may notice some liquid from the onions has collected at the top. This liquid tastes amazing, so let’s stir it back into the dip.
- Nutritional Information: The nutritional information below is an estimate. We used the USDA database to calculate approximate values.
If you make this recipe, take a picture and tag #inspiredtaste – we love to see your creations on Instagram and Facebook! Find us: @inspiredtaste
Nutrition per serving: serving size 1 of 8 servings (about 1/4 cup) / calories 147 / total fat 13.6g / Saturated Fatty Acids 7.6g / cholesterol 39.8mg / sodium 91.5mg / carbohydrate 5.4g / fiber 0.4g / total sugar 3.7g / protein 1.6g