·Sauce can be made 1 week ahead and cooled completely, then chilled, covered. ·If you aren't able to grill, steaks can be cooked in batches in a hot well-seasoned ridged grill pan.
Recipe information
Total Time
1 1/2 hr
Yield
Makes 6 servings
Ingredients
Preparation
Make sauce:
Step 1
Rinse chiles and remove stems, then split open and discard seeds and ribs. Heat a dry well-seasoned cast-iron skillet or heavy skillet over moderate heat, then toast chiles in batches, turning them, about 30 seconds total. Transfer chiles to a heatproof bowl and pour boiling water over them. Cover bowl and soak chiles, stirring occasionally, until softened, about 20 minutes.
Step 2
Reserve 2 cups soaking liquid, then drain chiles in a colander. Purée chiles, reserved soaking liquid, and roasted peppers in 2 batches in a blender until smooth (use caution when blending hot liquids). Force purée through a fine-mesh sieve into a bowl, pressing on and discarding solids.
Step 3
Cook garlic, cumin, oregano, and salt in butter in a 4-quart heavy saucepan over moderately low heat, stirring, 1 minute. Add flour and cook, stirring, 2 minutes. Whisk in chile mixture and simmer, whisking occasionally, until reduced to about 2 1/2 cups, 15 to 20 minutes. Add vinegar and salt to taste. Keep sauce warm, covered.
Grill steaks:
Step 4
Prepare grill for cooking. If using a charcoal grill, open vents on bottom of grill, then light charcoal. Charcoal fire is medium-hot when you can hold your hand 5 inches above rack for 3 to 4 seconds. If using a gas grill, preheat burners on high, covered, 10 minutes, then reduce heat to moderately high.
Step 5
Pat steaks dry and season with salt. Grill steaks, uncovered, on lightly oiled grill rack, turning over once, 6 to 8 minutes total for medium-rare. Transfer to a platter and let stand, loosely covered with foil, 5 minutes.
Step 6
Serve steaks with sauce.
