Step 1

Spray your crockpot or slow cooker with non-stick spray.

Step 2

Add the sliced onions and minced garlic, then place the chicken on top. Next, sprinkle the salt, pepper, and Italian spices over the chicken.

Step 3

Drizzle the chicken with olive oil and balsamic vinegar. Top with the canned tomatoes with their juices.

Step 4

Cook on low for 6 to 8 hours or on high for 4 hours.

Step 5

Top with mozzarella, Parmesan, diced tomatoes, and diced basil.

Step 6

Drizzle with extra olive oil and balsamic vinegar, if desired.

Step 7

Serve over pasta or with freshly toasted bread.