London broil on focaccia

top round beef, focaccia roll (wheat flour, water, rye flour, extra virgin olive oil, natural cheese flavor [maltodextrin, whey solids, natural cheese flavor, salt], salt, dough improver [guar gum and/or arabic gum, wheat flour, soybean oil, enzymes], natural rye sour, yeast, wheat gluten dextrose, malt extract, guar gum, malted barley flour, soy lecithin, fava bean flour, enzymes, xanthan gum, ascorbic acid), cheddar cheese (pasteurized milk cheese culture, salt, enzymes, annatto for color), lettuce, peppercorn sauce (soybean oil, distilled vinegar, mustard seeds, spices [including black, green, pink and white peppercorns], water, egg yolk, salt, sugar, maltodextrin from corn, brown sugar, onion, natural flavor, garlic, red bell pepper, lemon juice, horseradish, white wine, calcium disodium edta to protect quality, oleoresin of paprika for color).