1 tablespoon shallot, minced
2 teaspoons balsamic vinegar
2 teaspoons sherry vinegar
3 tablespoons olive oil, plus some for brushing the lettuce
salt and pepper to taste
3 Little Gem lettuce heads, sliced in half from stem to stern
2 ounces feta or goat cheese, crumbled
¼ teaspoon crushed red pepper flakes