mushrooms and onions for steak: #AllergicToEverything® Allergen-free Recipe by Jessica Gray Schipp | For Food Allergy Collectors & People with Multiple Food Allergies | Free From Recipes | Gluten-free, Wheat-free, Corn-free, Oat-free, Egg-free, Shellfish-free, Soy-free, Sesame-free

Sautéed Mushrooms and Onions

A quick and easy allergen-free, allergy-friendly topping to serve over steak or as a side dish. Sautéed mushrooms and onions for steak are simple and delicious every time.

Course Side Dish
Cuisine American, Grain-free
Prep Time 5 minutes
Cook Time 15 minutes
Total Time 20 minutes
Servings 4 people
Author Jessica Gray Schipp |


  • 1/2 lb Crimini mushrooms, sliced
  • 1 large Onion, sliced
  • 2 tablespoons Olive oil
  • 1 tablespoon Butter (or dairy-free alternative)
  • 1 teaspoon Worcestershire sauce
  • 1/2 teaspoon Garlic powder
  • 1/2 teaspoon Sea salt
  • 1/4 teaspoon Fresh ground black pepper


  1. Sauté the mushrooms, onions, olive oil, and butter over medium, until soft and the liquid from the mushrooms has almost evaporated completely.  This will take 10-15 minutes. 

  2. Add the Worcestershire, garlic powder, salt, and pepper and give it a stir.  Cook for another 1-2 minutes and serve!