Heat a large skillet over medium-high heat.Cook turkey sausage, breaking up the meat with a wooden spoon until it is cooked completely through and set aside.In a large bowl; whisk the eggs, egg whites, milk, kale, tomatoes and garlic salt together. Slowly add the pancake mix and continue to whisk, mixing together well. Add the turkey sausage to the bowl and stir until mixed through.Heat the oven to 350° and spray a casserole dish or pie plate with nonstick cooking spray and pour the mixture in.Bake uncovered for 40-45 minutes- until the center is cooked through. (Cooking time will vary according to the depth of the casserole dish.)