The best topping for steaks and burgers is right here! Learn how to make the best caramelized onions and mushrooms with only a few ingredients. Sauteed in a cast iron skillet, this easy recipe yields perfectly rich, deeply colored, and super smooth caramelized flavors every time. Use this versatile topping for steaks, burgers, soups, and so much more. Don’t like mushrooms? Leave them out!
8ouncessliced mushrooms(baby bellas, white, or canned)
1countlarge yellow onion(halved and sliced)
¼teaspoonskosher salt
Instructions
Wipe the mushrooms clean, slice, and set aside. (Skip this if you are using canned mushrooms. Halve and slice the onions and set aside.
To a large cast iron skillet, heat the butter and oil over medium-high heat.
Add the onions and allow them to cook undisturbed for 5 minutes or until the edges begin to brown. Stir and continue cooking until they begin to soften.
Add in the mushrooms and stir to combine. Reduce the heat slightly.
Continue to cook for about 45 minutes, stirring every few minutes. The onions are done caramelizing when they are soft and deep brown in color.
Remove from heat. Add salt and pepper to taste. Enjoy served warm over a steak or burger.