Place the mushrooms, onion, and garlic on a baking tray.
Sprinkle with fresh thyme and drizzle with olive oil.
Bake at 400°F for 30 minutes.
Remove the items from the oven and place them in a blender.
Add 3 to 4 cups of beef bone broth.
Blend well for two minutes until silky smooth.
Serve with a little shredded Parmesan on top (optional).
For more protein, you can blend in some tofu (optional).
