Bacon and mushrooms: it ain't complicated.
Turn the oven up to 400 F. While that's heating up, wrap the mushrooms with one strip of bacon each, securing them with a toothpick. Arrange the prepped mushrooms on a mid-sized baking sheet.
Bake the mushrooms for about 15 minutes in the preheated oven, until the bacon is evenly brown. Serve while hot.