→ Vegetables and Aromatics
01 -
1 shallot, finely chopped
02 -
2 cups sliced mushrooms, such as Portobello, Cremini, or Shiitake
→ Dairy
03 -
2 tablespoons unsalted butter, plus additional for spreading on bread
04 -
4 slices Swiss cheese or Gruyère
→ Pantry Items
05 -
1 tablespoon olive oil
06 -
1 teaspoon fresh or dried thyme
07 -
1 tablespoon balsamic vinegar (optional)
08 -
Salt, to taste
09 -
Black pepper, to taste
10 -
8 slices rye, sourdough, or artisan bread