Grilled Swordfish with Chimichurri Sauce

Ingredients

1 1/2 lb. swordfish steaks (2 steaks, about 1 inch thick)
1/2 tsp. kosher salt (divided, plus more to taste)
1/2 tsp. black pepper (divided)
1 1/2 cups parsley (tender sprigs, loosely packed)
1 cup cilantro (tender sprigs, loosely packed)
5 Tbsp. extra-virgin olive oil
1/2 tsp. crushed red pepper flakes (or 3/4 tsp. if you like it spicier)
2 garlic cloves (peeled)
2 lemons (divided)
vegetable oil (for oiling grill grates)

Directions

Preheat a grill for medium heat (350° to 450°F). Season swordfish on both sides with 1/4 tsp. each salt and pepper; set aside.

Put parsley, cilantro, olive oil, red pepper flakes, garlic, and remaining 1/4 tsp. each salt and pepper in a food processor. Add zest and juice of 1 lemon. Pulse chimichurri until well blended. Taste and add a little more salt if you like. Cut remaining lemon into wedges. Set sauce and lemon aside.

Oil grill grates, using tongs and a wad of paper towels with some vegetable oil. Grill swordfish with lid closed, turning it once, until fish reaches the doneness you like in the thickest part; using a thermometer, aim for 125°F for medium-rare to 145°F for medium-well, 5-7 minutes total.

Transfer swordfish to a platter and top with some of chimichurri sauce. Cut fish into portions and serve with lemon wedges and more chimichurri on the side.