This is more or less a recipe I got in a brochure that the milk marketing board was handing out at a baseball game. I made it once before with the adjustments I suggest here, and it was very tasty. It stays in the refrigerator well enough for a week or so, but definitely doesn't freeze and reheat well. I've cut the original recipe in half, because the original recipe makes 12 servings. Obviously, the objective was to sell plenty of milk and cheese. The only Passover adjustment I made in this recipe is substituting potato starch for flour to make the roux (a mixture of flour and butter that thickens a sauce). This substitution works very nicely, and should work in any recipe that calls for a roux, such as a cheese sauce or a souffle. I thought about including a souffle recipe in this series, but I've never had much success making a souffle rise properly, so I didn't feel qualified to explain it. You're welcome to try it. Let us know how i...