Preheat a grill to medium high. Melt the butter in a medium saucepan over medium heat. Add the flour and mustard powder and cook, stirring, 3 minutes. Whisk in the beer and bring to a simmer; whisk in the half-and-half until smooth. Return the sauce to a simmer and cook, whisking occasionally, until thickened, 3 to 4 minutes. Stir in the cheese and horseradish until smooth; keep warm.
Form the beef into four 6-ounce patties, about 3/4 inch thick; press the center of each patty with your thumb to make a 1/2-inch-deep indentation. Season the patties on both sides with salt and pepper. Lightly brush the grill grates with vegetable oil, then grill the patties, indentation-side up, until marked on the bottom, about 5 minutes. Flip and cook until marked and slightly firm, about 3 more minutes for medium doneness. Remove the patties to a plate and let rest 5 minutes. Grill the rolls, cut-side down, until lightly toasted, about 1 minute.
Top the bun bottoms with the burger patties, cheese sauce, tomato and chives. Cover with the bun tops.
Tools You May Need
Photograph by Levi Brown
Recipe courtesy Food Network Magazine
Tools You May Need
Price and stock may change after publish date, and we may make money off
these links.
By entering your email address, you agree to our Terms of Use
and acknowledge the Privacy Policy.
Food Network and
its affiliates
may use your email address to provide updates, ads, and offers.
To withdraw your consent or learn more about your rights, see the
Privacy Policy.