Kosher salt and freshly ground black pepper, to taste
Instructions
Melt butter in a saucepan over medium heat. Whisk in flour until lightly browned, about 1 minute. Gradually whisk in milk, and cook, whisking constantly, until incorporated, about 1-2 minutes. Stir in half and half, garlic powder, onion powder and paprika until slightly thickened, about 1 minute.
Stir in jalapeños and cheeses until melted, about 1-2 minutes. If the mixture is too thick, add more milk as needed; season with salt and pepper, to taste.
Serve immediately.
Notes
*Half and half is equal parts of whole milk and cream. For 1 cup half and half, you can substitute 3/4 cup whole milk + 1/4 cup heavy cream or 2/3 cup skim or low-fat milk + 1/3 cup heavy cream.