Caramelized Onions for Hot Dogs Recipe

Smoky, tangy, and deeply flavorful, this is my mom’s classic saucy Hot Dog Onions recipe. These caramelized, vinegary onions are my favorite topping for grilled franks and only take about 15 minutes to make. They brighten simple hot dogs and sausages with a perfect balance of sweet, sour, and heat—ideal for backyard BBQs, cookouts, and quick weeknight dinners.

Hot Dog Onions

Hot Dog Onions

As the weather warms up, these saucy onions become a go-to at backyard gatherings. They’re inspired by the savory toppings you find on New York street hot dogs—soft, flavorful onions simmered in tomato and vinegar with a touch of hot sauce. Use them to top hot dogs, sausages, or even burgers, or serve them alongside baked beans, potato salad, or a simple green salad to complete the meal.

Hot Dog Onions Recipe

What is the healthiest hot dog you can eat?

If you’re looking for a leaner option, choose uncured organic chicken or turkey hot dogs, which typically have less saturated fat and fewer preservatives than some beef varieties. For a plant-based alternative, try grilled vegan sausages or “carrot dogs.” Pairing any hot dog with flavorful toppings like these onions helps stretch servings and add vegetables to the plate.

Hot Dog Onion Sauce Ingredients

  • 2 large onions, thinly sliced
  • 2 tablespoons olive oil for sautéing
  • 2 tablespoons white vinegar (or apple cider vinegar)
  • 8 oz (1 small can) tomato sauce
  • 1/2 teaspoon kosher salt
  • Black pepper, to taste
  • 1 1/2 tablespoons hot sauce (such as Frank’s, or your favorite)
  • 1 1/4 cups water for simmering

How to Make Hot Dog Onions

This recipe is quick, forgiving, and easy to scale. You can make it a few days ahead and refrigerate, which makes it a fantastic option for parties and weeknight meals. The following steps will give you soft, saucy onions with bright tang and a gentle kick of heat.

  1. Sauté the onions: Heat the olive oil in a small pot over medium-low heat. Add the thinly sliced onions and cook, stirring occasionally, for about 6–8 minutes until the onions are soft and translucent but not browned.
  2. Add remaining ingredients: Stir in the vinegar, tomato sauce, salt, black pepper, hot sauce, and water. Bring to a gentle simmer, then reduce the heat and cook for 5–10 minutes so the flavors meld and the sauce thickens slightly. Taste and adjust seasoning or hot sauce to preference.
Ingredients for Hot Dog Onions.
onions in a pot
Sauté the onions until tender.
Hot Dog Onions
Combine and simmer until saucy.

What to Serve with Hot Dog Onions

These onions are a natural match for hot dogs and sausages but also taste great on grilled chicken, burgers, or as a topping for roasted vegetables. Pair them with crispy fries, sweet potato fries, baked beans, macaroni salad, or a simple cabbage slaw for a full summer spread. They also add depth to sandwiches and pulled-meat plates.

How to Store

Transfer cooled onions to an airtight container and refrigerate for up to 5 days. Reheat gently on the stovetop or microwave before serving. The flavors often deepen after a day, making these even better when made in advance.

Hot Dog Onion Sauce

What’s Your Favorite Hot Dog Topping?

Share your go-to toppings and any twists you like to make at home. I’m always looking for new ideas to try this summer.

Recipe Details

  • Yield: about 2 2/3 cups (8 generous 1/4-cup servings)
  • Prep Time: 5 minutes
  • Cook Time: 15 minutes
  • Total Time: 20 minutes

Nutrition (per 1/4 cup, generous)

  • Calories: 64 kcal
  • Carbohydrates: 8 g
  • Protein: 1 g
  • Fat: 3.5 g
  • Saturated Fat: 0.5 g
  • Sodium: 328 mg
  • Fiber: 1 g
  • Sugar: 5 g

Notes

This makes about 2 2/3 cups of saucy onions. Double the recipe for a crowd or to keep extra on hand. Adjust the hot sauce to suit your spice level. For a slightly sweeter profile, add a teaspoon of brown sugar while simmering.

pot of hot dog onions

More Summer Recipe Ideas

  • Homemade Kansas City–Style BBQ Sauce
  • Macaroni Salad with Tomatoes
  • Baby Red Potato Salad with Apples
  • Pickled Red Onions
  • Crustless Summer Zucchini Pie