Combine beef, sausage, syrup, mustard, garlic, salt, and pepper. Shape into 6 patties, being careful not to compact the meat.
6 slices bacon, 1 pound lean ground beef, 1/2 pound breakfast-style sausage, 1 tablespoon pure maple syrup, 1 tablespoon whole grain mustard, 2 cloves garlic, 1 teaspoon kosher salt