Learn how to make perfectly Sautéed Mushrooms and Onions for steaks, burgers, and many other dishes. Follow these clear steps to create restaurant-quality mushrooms and onions that are flavorful and never soggy.
What makes mushrooms and onions from steakhouses taste so irresistible? This recipe shows you how to sauté mushrooms and onions the way pros do: browned, caramelized, and packed with umami. They make a perfect accompaniment to juicy steaks and piled-high burgers, or a savory topping for pasta, rice, and more.
With simple pantry ingredients and a few technique tips, you’ll end up with mushrooms and onions that add depth and richness to any meal.
Why You’ll Love This Recipe
- Learn to sauté mushrooms and onions without ending up with a mushy result.
- An easy side dish that complements a wide range of main courses.
- A reliable method to get perfect mushrooms and onions for steaks and burgers.
- Gluten-free and straightforward to make.
Ingredients You Need
This recipe comes together with fresh mushrooms, onions, and a few basic seasonings.
- Extra virgin olive oil – adds a high smoke-point fat that helps create crisp edges. Avocado oil can be used instead.
- Unsalted butter – enriches the flavor; if using salted butter, reduce added salt to taste.
- Mushrooms – brown (cremini) or white button mushrooms work well. You can use a mix of varieties or shiitake for a different flavor.
- Onion – sweet or yellow onion pairs nicely with meats.
- Garlic – fresh minced garlic brightens the dish.
- Thyme – fresh or dried thyme is recommended. You can substitute oregano, basil, or an Italian herb blend if preferred.
Optional: Add sliced bell peppers with the onions and sauté until tender for a colorful variation.
How to Make Sautéed Mushrooms and Onions
Follow these four straightforward steps for browned, flavorful mushrooms and onions.
- Heat the skillet: Add the olive oil and butter to a large cast-iron or stainless-steel pan. Heat over medium-high until the fats are hot but not smoking.
- Cook the mushrooms: Add the sliced mushrooms, stir to coat, then let them cook undisturbed for 4–5 minutes so they can brown.
- Add onions and aromatics: Lower the heat to medium. Add the sliced onion, minced garlic, and thyme. Continue to cook until the mushrooms and onions are tender and nicely caramelized at the edges.
- Season and serve: Taste and adjust with salt and pepper. Serve alongside steaks, burgers, chicken, or tossed into pasta or rice.
Expert Tips
- Dry mushrooms thoroughly: Wipe mushrooms with a damp cloth and pat completely dry. Excess moisture causes steaming instead of browning.
- Use a hot pan: A high heat helps evaporate released moisture quickly so the mushrooms brown instead of becoming soggy.
- Deglaze for extra flavor: A splash of Worcestershire sauce, soy sauce, or white wine loosens browned bits and intensifies flavor.
- Bright finish: Right before serving, add a squeeze of lemon juice and some chopped parsley or chives to lift the dish.
FAQs
Start with the mushrooms so they can brown. Add the onions once the mushrooms have developed color and begin to caramelize.
It’s best to add salt toward the end of cooking. Salting early draws out moisture that can prevent proper browning.
Rubbery mushrooms usually result from cooking wet mushrooms at too low a heat. Dry them well and cook over medium-high heat so moisture evaporates quickly.
Serving Suggestions
Sautéed mushrooms and onions elevate many meals. They pair well with grilled or seared meats, poultry, and can also be served over pasta or rice.
- Pan-seared or grilled steaks
- Burgers or bunless burgers
- Grilled chicken
- Sheet pan quesadillas or other quick weeknight dinners
- Roasted or braised pork dishes
Give this recipe a try and adjust herbs and seasonings to your taste. Store leftovers in an airtight container in the refrigerator for 3–5 days, or freeze for up to 3 months. Reheat directly from frozen in a pan over medium-high heat.
Sautéed Mushrooms and Onions
Ingredients
- 2 tablespoons extra virgin olive oil
- 2 tablespoons unsalted butter
- 1 pound brown or white mushrooms, sliced
- 1 large sweet yellow onion, sliced
- 2 cloves garlic, minced
- 1/2 teaspoon kosher salt
- 1/2 teaspoon freshly ground black pepper
- 1/2 teaspoon dried thyme
Instructions
- Add the olive oil and butter to a large skillet set over medium-high heat.
- Add the mushrooms, stir to coat, and sauté for 4 to 5 minutes without disturbing to allow browning.
- Reduce heat to medium. Add the sliced onion, garlic, salt, pepper, and thyme. Cook another 6 to 7 minutes until the mushrooms and onions are soft and nicely browned.
- Taste and adjust seasoning. Serve warm with your favorite main dish.
Notes
Storing: Refrigerate in a shallow, airtight container for 3–5 days.
Freezing: Cool completely, pack in a freezer bag with air removed, and freeze up to 3 months. Reheat from frozen in a pan over medium-high heat.
Nutrition
Nutrition information is an estimate and should be used as a guideline.