Easy Chicken Parmigiana
Ingredients:1⁄2 cup olive oil1 small yellow onion, roughly chopped1 garlic clove, minced1 (28-oz.) can whole peeled tomatoes, crushed by hand1 tbsp. sugarKosher salt and freshly ground black pepper1 tbsp. unsalted butter1⁄2 cup flour3 eggs, lightly beaten1⁄2 cup Italian breadcrumbs6 tbsp. grated parmesan cheese4 chicken breasts (about 1 1/2 lbs.)8 oz. mozzarella cheese, thinly sliced and