Mushroom Toast Cups

Step 1
Preheat the oven to 400 degrees F (200 degrees C).

Step 2
Use a small cookie cutter to cut rounds out of bread. Press rounds into ungreased mini muffin tins.

Step 3
Bake in the preheated oven until golden, 8 or 9 minutes; watch them closely as they bake fast. Turn out bread cups to cool.

Step 4
Heat butter in a large skillet over medium heat. Cook and stir mushrooms and onion in hot butter until soft, about 8 minutes. Season with parsley, lemon juice, salt, pepper, and cayenne pepper. Pour in half-and-half, then gradually stir in flour until mixture is thickened.

Step 5
Fill bread cups with mushroom mixture and top each with a sprinkle of Parmesan. Place on a lightly greased baking sheet.

Step 6
Bake in the preheated oven until cheese is melted, 10 to 12 minutes.