Chicken Sandwich with Wilted Spinach

After trying spinach in a few other recipes, I realized that I like it wilted. A lot. So, bring on the sandwich!
Ingredients:
1 English Muffin (120 calories)
2 ounces cooked, shredded chicken breast (94 calories)
1/2 cup onion, slivered (34 calories)
1/4 tsp minced garlic (1 calorie)
1/2 cup raw spinach (3 calories)
1 tsp Kraft Free Mayo (4 calories)
1 tsp dijon mustard (5 calories)

Directions:
Spray non-stick pan with cooking spray and "I can't believe it's not butter" spray. Saute onion and garlic until tender. While you are sauteeing, toast your english muffin. When the onion and garlic are tender, add chicken and warm through. Spread mayo and mustard on each side of the muffin. Just before plating, add spinach to the mixture that is in the pan. Stir for about one minute, then scoop entire contents onto your english muffin. Serve immediately. Top with tomatoes for an extra burst of flavor!

Total Calories: 261