Mushroom, Onion, and Spinach Sandwich

Total Time
Prep 5 mins
Cook 10 mins

We love this recipe. It's fast, easy, tastes good, and is healthy. I found it on one of my favorite blogs, CuisineNie (aka, but, since CuisineNie is now closed, I thought I'd put this recipe back out there. The amounts of onion, mushrooms, garlic, spinach, vinegar, and cheese are all approximate and should be altered according to your tastes. The recipe is pretty flexible; you can use different types of mustard, cheese, etc.. We like this served with canned Progresso lentil soup.

Ingredients Nutrition


  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. Sauté 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 sautéed 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.
Most Helpful

Pretty good but needs something. Maybe cheddar instead of mozzarella?

jade1977 May 24, 2010

This was a good sandwich. I served it on whole wheat flatbread that I warmed up under the broiler. I used vegan italian blend cheese and TOTALLY forgot to do mayo/mustard. It would have made it so much tastier! Thanks so much for sharing. My DH rated it a 7/10 which is very good from him! :O)

SPrins April 20, 2010