Grilled Vidalia Onion with Orange-Honey Vinaigrette

• 2 large (about 1-1/2 pounds) Vidalia Sweet Onions
• 1/4 cup orange juice
• 1 tablespoon olive oil
• 2 teaspoons red wine vinegar
• 1-1/2 teaspoons honey or brown sugar
• 1/2 teaspoon salt
• a pinch of ground black pepper

Preheat outdoor grill or broiler and cut Vidalia onions into in 8 (1/2 inch thick) slices. Prepare the dressing by combining orange juice, oil, vinegar, honey, salt and black pepper in a small bowl.

Place onion slices on a grill or broiler pan. Grill until slightly softened and golden brown, about 3 minutes; turn and cook until tender, about 3 minutes longer. Spoon half of the dressing over the onions and remove from grill.

Serve on a bed of spinach leaves topped with chopped tomatoes and drizzled with remaining dressing.