Step 1

Lightly spray the inside of the crock pot with cooking spray.

Step 2

In a large bowl, combine the marinara, frozen peppers and onions, frozen squash, mushrooms, garlic, and red pepper flakes.

Step 3

Place the chicken in the crock pot.

Step 4

Pour the marinara mixture over the chicken.

Step 5

Cook on low for 6-8 hours.

Step 6

Serve over pasta or rice.