Preheat oven to 250 degrees F. Pour milk into a small saucepan over medium low heat. Stir until warmed. Place milk along with remaining ingredients into a large mixing bowl. With a rubber spatula, stir until combined, then pour into a well greased 9x13 inch baking dish. Bake for 1 hour, remove and let cool for 15 minutes. Cut into squares and let continue cooling. Store in an air tight container.