Heat olive oil in a large skillet on medium heat. Add sliced mushrooms (without salting - to ensure they mushrooms get caramelized) and cook on medium heat for about 3 minutes flipping once.
Add chopped cooked bacon to the skillet.
Add heavy creamy, ⅛ teaspoon salt and snipped fresh thyme, bring to boil, stir, immediately reduce to simmer and simmer for about 2 minutes on very low heat for flavors to blend and sauce to reduce a bit. Taste and add more salt if needed.