3 spinach warm feta dressing Recipes

fresh spinach leaves, olive oil, divided, red onion, halved, cut into 1/3-inch-thick wedges with some core attached, feta cheese, coarsely crumbled, sherry wine vinegar

torn young spinach leaves, coarsely shredded lettuce, bacon , fried crisp and crumbled, grape tomatoes, tub sliced fresh mushrooms, ripe or kalamata olives, drained, hard-boiled eggs, salt and pepper to taste, bacon drippings, wine vinegar, sugar, grated onion, purple onion, thinly sliced and separated into rings., feta cheese or blue cheese to crumble on top