This is a lasagna alternative I found in an old issue of "Canadian Living". It was from an article spotlighting personal chefs and make-ahead dishes. Bake in two 9x9-inch dishes or one very large casserole. CHEF NOTE: After making this several times, I prefer to make the "topping" more cheesy. I reduce flour to 1/4 cup and reduce milk to 2 cups, increasing cheese to a generous 1 cups mozzarella cheese with another half cup or more sprinkled over top.