Preheat oven to 350F, spray a 8 inch casserole dish with some non-stick cooking spray.In a pot over low heat melt the butter and cream cheese, stirring often, this will take several minutes for the cream cheese to melt down. Add in the milk and sour cream and stir till nice and creamy.Add in the seasonings and corn and mix well.Pour into the casserole dish, top with the shredded cheese and crushed ritz crackers and bake in the oven for approximately 20 minutes until golden brown and cheese is bubbling.Let cool for 5 minutes then serve, makes 8- heaping ½ cup servings.Store leftovers in the fridge, this will freeze well