Mix your ricotta, garlic powder and thyme together (You may run out depending on how much you stuff into your mushrooms. That's okay just kind of wing it if you need more)
Now with your mushrooms de-stemmed and cleaned, brush them with the olive oil and sprinkle some salt on them.
Now stuff the mushrooms with the ricotta mixture. Once each one is stuffed, add the cheese on the top of the ricotta mixture on each mushroom. Top them with the strips of bacon *if you want*
Bake in a cast iron pan or on a baking sheet. Cook them until the cheese has melted and the ricotta has begun to turn slightly golden brown.
Serve and enjoy!