Asparagus Stuffed Chicken with Mushrooms - The Weary Chef

Ingredients

• 2 pounds chicken breasts butterfly cut and pounded flat
• 1 pound thin asparagus trimmed
• 6 ounces button mushrooms finely chopped
• 1/2 red pepper finely chopped
• salt and pepper
• 1 pound onions sliced thin
• 1/2 pound tomatoes sliced (about 3 large)
• 1/2 cup chicken broth
• 1 tablespoon coarse whole grain mustard
• 1/4 cup balsamic vinegar
• 2 garlic cloves minced
• 1 tablespoon honey
• 1/4 teaspoon ground thyme
• 1/4 teaspoon red chili flakes