Alyssa Gorelick serves this grilled Romesco sauce over quinoa-stuffed poblano peppers. Any extra sauce is terrific with roasted or grilled potatoes or on a veggie burger.
Light a grill. Wrap the red peppers, tomato and onion in a large sheet of heavy-duty aluminum foil. Grill over moderate heat for about 25 minutes, until the vegetables are softened and charred.
Transfer the vegetables to a blender. Add the almonds and crushed red pepper and puree. Season with salt and serve.