Amorous Poached Egg Sandwich With Swiss Cheese Sauce

Ingredients

• 1 tablespoon unsalted butter
• 1 tablespoon onion, finely chopped
• 1 tablespoon all-purpose flour
• 3/4 cup milk
• 2 ounces swiss cheese, shredded (about 1/2 cup)
• salt, to taste
• fresh ground black pepper, to taste
• 1 tablespoon unsalted butter
• 7 tablespoons onions, finely chopped
• 5 ounces baby spinach
• 1 teaspoon distilled white vinegar
• 1 English muffin, split
• 2 large eggs
• 4 slices prosciutto, about 2 ounces
• 2 slices tomatoes

Directions

1. 1

   In a small saucepan, melt 1 tablespoon butter over medium heat.

2. 2

   Add 1 tablespoon onion and cook, stirring, until softened, about 3 minutes.

3. 3

   Whisk in the flour and stir for 1 minute.

4. 4

   Whisk in the milk and simmer for 2 minutes, then whisk in the cheese and season to taste with salt and pepper. Cover the cheese sauce and set aside.

5. 5

   Melt the remaining 1 tablespoon butter in a medium skillet over medium heat.

6. 6

   Add the remaining onion and cook, stirring, until golden, about 7 minutes.

7. 7

   Add the spinach and cook until soft, 3 to 4 minutes.

8. 8

   Season to taste with salt and pepper.