Crockpot Italian Chicken

Ingredients

For 4 servings

• 2 tablespoons extra virgin olive oil
• 2 pounds boneless skinless chicken breasts (or chicken thighs)
• 1/2 teaspoon kosher salt
• 1/2 teaspoon freshly cracked black pepper
• 1 can diced tomatoes ((14 ounces))
• 1/2 cup balsamic vinegar
• 3 cloves garlic (minced)
• 1 bay leaf
• 1 teaspoon dried basil
• 1 small red onion (diced)
• Shredded mozzarella cheese (for serving)
• Thinly sliced fresh basil (for serving)