Chicken Marsala Delight with Fresh Tomatoes

Ingredients

• 2 lbs. boneless skinless chicken breasts
• 1 teaspoon cornstarch
• 1 tablespoon olive oil
• 1 cup cherry tomatoes
• 3 tablespoons butter, divided
• ½ teaspoon salt, plus more to taste
• 16 ounces fresh crimini mushrooms, sliced
• 2 cloves garlic, minced
• 2 tablespoons heavy cream
• 1 cup dry Marsala wine
• ¼ cup fresh parsley, chopped
• ⅓ cup flour
• 1 teaspoon all-purpose seasoning