Olsmorgas (Open-Face Mushroom And Onion Sandwich) - cooking recipe

Ingredients

1 teaspoon butter (or as needed)
1 medium onion, chopped
1/3 cup sliced mushrooms
1 dash salt
1 dash pepper
1 slice pumpernickel bread
1 tablespoon minced parsley

Preparation

Melt butter in a skillet and saute the onion until wilted.
Add mushrooms and cook until light brown and a little crisped around the edges.
Add salt and pepper.
Spoon mixture onto bread.
Sprinkle with parsley.