Mini Philly Cheesesteaks

1. Stage

Preheat the oven to 400 degrees F (200 degrees C). Line baking sheets with aluminum foil.

2. Stage

Make sauce: Melt butter in a skillet over medium-high heat. Whisk flour into hot butter and cook, whisking constantly, until mixture is pale and flour taste cooks off, about 1 minute. Whisk milk into flour mixture until mixture is hot and thickened, 3 to 6 minutes. Add provolone cheese, nutmeg, cayenne pepper, and salt; stir until cheese is completely melted. Set aside.

3. Stage

Make mini cheesesteaks: Season steak with salt and black pepper.

4. Stage

Heat 1 tablespoon olive oil in a skillet over medium-high heat. Cook steak in hot oil, turning occasionally, until meat is slightly firm and pink on the inside, 5 to 7 minutes. Transfer meat to a plate.

5. Stage

Return the skillet to heat and pour in water; bring to a boil while scraping the browned bits of food off of the bottom of the pan with a wooden spoon. Pour liquid from the skillet over steak. Cool steak to room temperature; dice meat and place meat and accumulated juices from the plate into a large bowl.

6. Stage

Heat 1 tablespoon oil in a skillet over medium-high heat; sauté onion and peppers in hot oil until softened and slightly translucent, about 5 minutes. Stir onion and peppers into beef in the bowl; season with salt and pepper.

7. Stage

Spread bread slices out on the prepared baking sheets and drizzle with remaining 1 tablespoon olive oil. Flip slices over so the oiled sides face downward. Spread cheese sauce generously onto each slice. Spoon beef mixture on top. Sprinkle with provolone cheese.

8. Stage

Bake in the preheated oven until browned and cheese is melted, 12 to 15 minutes. Chef John