Mushroom & Onion Grill Cheese Sandwich

What better way to celebrate a rainy day in Williamsburg, than with a yummy grill cheese and tomato soup?

What you'll need:
- 2 slices of multigrain bread
- olive oil
- butter (optional)
- salt & black pepper
- some red pepper flakes (optional)
- 1/2 medium onion -- sliced
- handful of fresh mushrooms
- your favorite cheese (I made a trifecta of gouda, mozzarella, and colby jack)

How you make it:

Start by heating up a pan with some olive oil. Add the sliced onion, sprinkle some salt and let cook. Meanwhile slice your mushrooms.
When you've sliced your mushrooms, add them, black pepper and crushed red pepper to the onions. Let it continue to cook, stirring occasionally.

Meanwhile, butter one side of each piece of toast. Remove the cooked mushroom and onion mixture from heat.

Place one slice of bread, butter side down, on a pan on medium/low heat. Layer half of the cheese on the slice. Then layer the mushroom mixture. Add the rest of the cheese and top off with the second slice of bread, butter side up. Cover with lid, so that the cheese fully melts.

When the bottom toast is golden, flip the sandwich. Do not cover with the lid! When both sides are golden, remove from heat.

Let the sandwich sit before cutting (otherwise it will fall apart).

Voila! Serve with a bowl of your favorite tomato soup and rainy days are instantly better!