1. 4 slices of toast, with two slices removed in the middle, leaving the border.
2. Slice the mushrooms, cut the bacon into small pieces, add some salt and fry them in olive oil.
3. Cut green, red and yellow peppers into small cubes.
4. Brush with tomato sauce (other sauces are also available, such as pizza sauce, etc.).
5. Sprinkle some cheese and spread bacon.
6. Sprinkle more cheese (personally like to eat cheese, if you don't like it, you don't need to sprinkle so many layers).
7. Spread another layer of mushrooms.
8. Sprinkle with diced green, red, and yellow peppers, and add a few blueberries.
9. Spread cheese on the top layer.
10. Spread a piece of greased paper on the baking sheet, preheat the oven to 200 degrees, and bake for 5 minutes. Bake for 1 minute and out of the pan. (Adjust according to the temperature of your own oven, visual inspection shall prevail).
