Tips for Success
- Use Fresh Mushrooms: For a deeper, richer flavor, opt for fresh mushrooms instead of canned.
- Cheese Choices: Mix in Gruyère or fontina for a gourmet touch.
- Make It Ahead: Assemble the casserole the night before, refrigerate, and bake when ready.
- Vegetarian Option: Replace beef with lentils or plant-based meat and use vegetable broth.