2 tablespoons fresh orange juice
2 tablespoons fresh lime juice
2 teaspoons Dijon mustard
2 teaspoons honey
1/4 teaspoon salt
1/8 teaspoon freshly ground black pepper
1/2 cup thinly vertically sliced red onion
8 cups spinach (about 8 ounces)
1 large, firm, sweet-tart apple, cored and thinly sliced
1/4 cup (1 ounce) crumbled blue cheese
Combine first 6 ingredients, stirring well with a whisk.
Combine onion, spinach, and apple in a large bowl. Drizzle with dressing; toss gently to coat. Sprinkle with cheese.