Measure 1 cup breadcrumbs and place in a casserole dish and then season with salt and pepper. Set aside.
Combine the remaining 3/4 cup breadcrumbs, green onions, lemon zest, lemon juice, beaten egg, mayonnaise, Dijon mustard, crab boil seasoning, salt and pepper in a large bowl. Fold in the crabmeat until just combined. Form the crab mixture into 4 (1-inch thick) patties and dredge both sides through the seasoned breadcrumbs and place on a platter.
Heat a large nonstick skillet with olive oil over medium-high heat. Add the crab cakes and cook for 4 to 5 minutes per side, until golden brown and crisp. Serve the crab cakes on toasted buns topped with lettuce, tomato, bacon, and the Dill Tartar Sauce.
Dill Tartar Sauce:
Mix the mayonnaise, relish, dill, lemon juice, hot sauce, Worcestershire sauce, salt, and pepper together in a small bowl to combine. Top the Crab Cakes BLTs with dill tartar sauce.