Ingredients

- 8 tbsp butter
- olive oil
- 2 large onions, sliced thinly
- 16 oz mushrooms, sliced
- 1/2 tsp salt
- 1/4 tsp pepper
- 8 slice sourdough bread
- 8 sliced Gouda cheese

Method
Caramelizing the Onions
- Put in 2 tbsp of olive oil and 2 tbsp of butter into a pan on medium heat.
- Once the butter is mostly melted, add the onions and turn down the heat.
- Stir and add a little bit of the salt.
- Cook for 20 minutes to brown, checking every 5 minutes to prevent them from burning
- Add the mushrooms, the rest of the salt, and the pepper. Cook for 10 more minutes.
Preparing the grilled cheese
- Warm up the pan on medium heat and butter one said of the bread.
- Lay the buttered side of bread on the pan, then add a slice of Gouda first, then a layer of caramelized onions, then another slice of Gouda, and finally add bread on top, butter side up.
- Cook for a few minutes, until the bread is a nice golden brown and the cheese is melted.
- Serve on a plate and enjoy!