How to Make It
Stir together mayonnaise and adobo sauce in a small bowl. Cover and chill until ready to use.
Preheat grill to medium-high (about 450°F), or preheat a grill pan over medium-high. Gently mix ground beef and Taco Seasoning with your hands in a large bowl until thoroughly combined. Gently shape mixture into 4 (1-inch-thick) patties; season with salt. Grill patties, uncovered, until done, 5 to 7 minutes on each side. Remove from heat.
Melt butter in a large nonstick skillet over medium. Crack eggs into skillet, and cook, covered, to desired doneness, 2 to 4 minutes.
Spread adobo mayonnaise on buns; top each with 1 patty, 1 egg, and desired toppings. Cover with bun tops.