20 Baby Bella mushrooms
1 tablespoon Butter Olive Oil
1 tablespoon Extra Virgin Olive Oil
1/2 cup finely chopped yellow onion
2 tablespoons coarsely chopped walnuts
1 garlic clove, minced
1-2 cups fresh spinach. chopped
1 ounce feta cheese
1 ounce Gruyere cheese (optional)
Italian seasoning, to taste
Salt and pepper to taste
Heat olive oil in a skillet. Add onions and cook until light brown.
Preheat oven to 400°.
Add walnuts and garlic to onion and cook for another minute. Add spinach and cook another 5 minutes, stirring constantly.
Remove from heat and cool slightly. Add cheeses, salt and pepper.
Arrange mushrooms in baking dish. Divide filling mixture evenly among them. (At this point the mushrooms can be covered and stored for several hours in the fridge until your guests arrive, if necessary!)
Bake about 10 minutes or until filling is browned and mushrooms are thoroughly heated.