Sauteed Mushrooms 1 (8 oz / 220 g) can or jar of mushrooms, sliced 1/4 onion, chopped 2 Tbs butter 1 tsp lemon juice salt and pepper 1. Heat frying pan to medium high, add butter and onions and sautee until translucent 2. Add mushrooms and lemon juice and continue cooking for 5-10 until browned. 3. Salt and pepper to taste.