3 charred radicchio with balsamic and Recipes

skirt steak , cut crosswise into 1/2-inch-thick slices, balsamic vinegar, divided, garlic cloves (2 cloves finely chopped and 1 halved ), red onion, cut into 10 wedges, peanut oil, grape or cherry tomatoes, halved, torn radicchio (2 oz), whole-grain bread, toasted, fresh rosemary sprigs, for garnish

sherry wine vinegar, extra virgin olive oil, divided, shallots, finely chopped, red pepper flakes, garlic paste (1 medium clove garlic mashed with a pinch of salt), fresh flat-leaf parsley, chopped, fresh oregano, finely chopped or 1 tsp dried oregano, fresh thyme leave, finely chopped, kosher salt, black pepper, freshly ground, heads radicchio, quartered and core trimmed, bacon, balsamic vinegar, aged, fresh chives, chopped