Bring a pot of water to a boil and salt it. Blanch the broccoli rabe for 5 minutes, drain and cool. Finely chop and reserve.
Place ground meat in a bowl and season with salt, pepper, fennel, chili, garlic, onion and juice, paprika, Romano, chopped rabe and a healthy drizzle of EVOO, twice around the bowl. Mix and form 4 large, thin patties about a half-inch thick.
Heat a griddle or cast-iron pan over medium-high heat. Cook patties 3-4 minutes on each side. Remove to plate. Reduce heat to medium. Wipe pan clean.