Mushroom, Onion, And Spinach Sandwich

• 1 large onion
• 12 ounces fresh sliced white mushrooms
• 1 garlic clove
• 1 1/2 tablespoons olive oil
• salt and pepper, to tase
• 6 slices whole wheat bread
• mustard
• mayonnaise
• 2 1/2 cups fresh spinach
• 1 tablespoon balsamic vinegar
• 1 1/2 cups mozzarella cheese

1. 1. Chop onion and mince garlic.
2. 2. Heat oil in large frying pan and add onion, garlic, and mushrooms. Season with salt and pepper to taste. Saute until soft.
3. 3. Meanwhile, toast bread and spread mayonnaise and mustard on toasted bread slices.
4. 4. Remove pan from heat and add spinach and balsamic vinegar to pan. Stir until spinach wilts.
5. 5. Divide sauteed mixture evenly onto three slices of bread. Evenly divide cheese onto each of these slices of bread (on top of mushroom mixture). Top with the remaining slices of bread.

onion, white mushrooms, garlic, olive oil, salt, whole wheat bread, mustard, mayonnaise, fresh spinach, balsamic vinegar, mozzarella cheese

Taken from www.food.com/recipe/mushroom-onion-and-spinach-sandwich-418936 (may not work)