Preheat oven to 350°F
If using regular bacon, 7-9 thin strips (thick cut is not recommended), cook to crispy, but not overdone. Crumble when cooled. Skip this step of using bacon bits.
Cook onion until translucent, just a little oil (or bacon grease) in skillet. Set aside to cool.
In a large bowl, mix beef, egg and milk
Add onion and chopped mushrooms, mix some more
Add cheese, bacon bits (reserve some for topping) and bread crumbs, mix well
Shape into a loaf on a sheet pan, or use a loaf pan.
Bake for 1 hour (uncovered)
Remove from oven, carefully drain fat. This is how much I got from my 93/7 mix (see photo)
Sprinkle remaining bacon on top, then the remaining cheese
Place back in oven for 5-10 minutes to melt cheese to your level of doneness.
Remove, let sit 10 minutes before serving.
