Step 1

Preheat the oven to 400 degrees F (200 degrees C). Line a baking sheet with aluminum foil.

Step 2

Combine broccoli and water in a microwave-safe bowl. Cook in the microwave on high power for 2 minutes. Drain.

Step 3

Combine cooked broccoli, pepperjack cheese, mayonnaise, mushrooms, and garlic powder in a large bowl.

Step 4

Season both sides of each chicken breast with paprika, salt, and pepper. Use a sharp knife to cut a slice through the middle of each breast to create a deep pocket, making sure not to cut all the way through. Evenly stuff each breast with broccoli mixture and place on the prepared baking sheet.

Step 5

Bake in the preheated oven until chicken is no longer pink in the center and juices run clear, about 35 minutes. An instant-read thermometer inserted into the center should read at least 165 degrees F (74 degrees C).