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A bowl of creamy mashed potatoes topped with brown onion gravy, a whole cooked onion, black pepper, and fresh rosemary on a dark surface.
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5 from 6 votes

Onion Gravy Recipe

This hyper-luscious onion gravy is your mashed potatoes’ soulmate, your stuffing’s secret weapon, and the unsung hero of your Thanksgiving table. It’s loaded with deeply caramelized onions, infused with woodsy herbs, and fortified by the holy duo of mushroom stock and tamari.
Prep Time5 minutes
Cook Time25 minutes
Total Time30 minutes
Course: sauce
Cuisine: American
Diet: Gluten Free, Vegan, Vegetarian
Servings: 4 Cups
Calories: 252kcal
Author: Adam Sobel
Cost: $6

Equipment

Ingredients

  • ¼ cup olive oil
  • 2 cups onion peeled and sliced
  • 2 cups pearl onions peeled
  • 2 teaspoons garlic minced
  • 1 tablespoon fresh rosemary chopped
  • 1 teaspoon thyme
  • 1 teaspoon ground sage
  • ½ teaspoon ground black pepper
  • 3 ½ cups mushroom stock or vegetable stock (unsalted)
  • 3 tablespoons tamari or soy sauce
  • ¼ cup corn starch or arrowroot
  • cup water

Instructions

  • Heat the olive oil in a large skillet over medium heat. After 90 seconds, when the oil is hot, add the sliced onions and pearl onions and cook for 10-12 minutes, stirring occasionally, until deeply browned and caramelized.
  • Add the garlic, rosemary, thyme, sage, and black pepper, and cook for 2 minutes, stirring continuously.
  • Pour in the mushroom stock and tamari, stir well, and bring to a simmer. Reduce the heat to medium-low and cook for 10 minutes, stirring occasionally, until the pearl onions are tender.
  • In a small bowl, whisk the cornstarch with the water until smooth.
  • Slowly pour the slurry into the gravy while stirring continuously. Cook for 3 minutes over medium heat, stirring, until thickened to desired consistency.

Notes

🧅 Caramel Gibson:
Caramelize slowly over medium heat—deep browning equals deep flavor. Don’t crowd the onions or crank the heat unless you want to skip the flavor.
🥄 Eh Scape From L.A.:
Once onions are jammy and golden, scrape up the fond (that sticky, dark goodness on the pan). Add your stock and mix in all that good scraped-up stuff from the bottom.
🥣 Smooth Operator:
Whisk your cornstarch or arrowroot with cold water before adding it to the gravy. No shortcuts, no lumps, just silky glory.

Nutrition

Calories: 252kcal | Carbohydrates: 30g | Protein: 4g | Fat: 14g | Saturated Fat: 2g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 10g | Sodium: 1587mg | Potassium: 334mg | Fiber: 4g | Sugar: 10g | Vitamin A: 483IU | Vitamin C: 16mg | Calcium: 57mg | Iron: 1mg