Dijon Cream Mushroom Gratin

How to make it

1. Pat the mushroom dry and season well with salt, pepper, and a little of the spice mix.
2. Heat the butter in a dutch oven over medium-high and crisp the mushroom until deeply colored.
3. Add the aromatics with the cremini mushrooms and pearl onions; cook until fragrant and just tender.
4. Build the dijon cream sauce in the pan and simmer until it clings to everything.
5. Fold it back together, taste for salt, and finish with the fresh herbs.
6. Serve hot over buttered potatoes.