Bacon Wrapped Asparagus

Name: Bacon Wrapped Asparagus
Ingredients: 1 1/2 pounds fresh asparagus, ends trimmed; 8 slices bacon; 2 tablespoons extra-virgin olive oil; 1 teaspoon kosher salt; 1 teaspoon freshly ground black pepper; 2 tablespoons unsalted butter; 2 tablespoons all-purpose flour; 1/2 teaspoon mustard powder; 1/2 teaspoon onion powder; Pinch freshly grated nutmeg; 1 cup whole milk; 1/2 cup grated Gruyere; 1/2 cup crispy fried onions