Kale and Caramelized Onion Grilled Cheese

Ingredients:

• 4 medium kale leaves, stems removed
• 2 teaspoons canola oil 
• 2 medium red onions, cut into ½-inch-thick slices
• ¼ teaspoon freshly ground black pepper
• ⅛ teaspoon kosher salt
• 1 teaspoon red wine vinegar
• 8 (1-ounce) slices multigrain bread
• Cooking spray
• 1 ounce finely grated Parmesan cheese, divided (about ¼ cup) 
• 3.5 ounces shredded raclette cheese (about ⅞ cup)

Instructions:

1. Preheat oven to 300°.
    
2. Bring a small pot of water to a boil; add kale. Remove from heat; let stand 4 minutes or until kale is bright green. Drain; rinse kale under cold water until cool. Pat leaves dry.
    
3. Heat a skillet over medium-high heat. Add oil; swirl to coat. Add onion, pepper, and salt. Cook 10 minutes or until onion is tender and browned, stirring frequently. Remove from heat; stir in vinegar, tossing to coat. Coarsely chop onion.
    
4. Heat a large nonstick skillet over medium heat. Lightly coat 1 side of each bread slice with cooking spray. Working with 2 slices at a time, arrange bread in pan, sprayed side down. Cook 1½ minutes or until bread begins to brown. Sprinkle 1 tablespoon Parmesan on 1 bread slice in pan. Top with 1 kale leaf, one-fourth of onion mixture, and about ¼ cup raclette. Top with other toasted bread slice. Transfer sandwich to a baking sheet. Repeat procedure with remaining 6 bread slices, Parmesan, 3 kale leaves, onion mixture, and raclette. Bake sandwiches at 300° for 5 minutes or until cheese melts.

Note : Serves 4.

Photo Credit: Brian Woodcock
Source : www.myrecipes.com/recipe/kale-onion-grilled-cheese-50400000130007/