1- Bring a 2-quart saucepan of water to a boil over high heat.Add potatoes, cover anr retun to a boil. Reduce the heat to low. Simmer until potatoes are tender, adout 10 MINS. Remove potatoes with a slotted spoon and set aside. Repeat the cooking process with the cauliflower, cattots and aspargus, cooking just until crisp tender.
2- Preheat the ocen to 350F. Lightly grease a 2- quart casserole with butter.
3-Melt the butter in a medium saucepan over MED heat. Stir in the flour until smooth. Grarually stir in milk. Cook, stirring constantly, until thicken. Season to taste with satl & pepper. Add the cheese, stirring until melted.
4- Arrange the veggies in the buttered casserole. Pour the sauce over the veggies and sprinkle with the parsley. Bake until heated through, about 15 MINS.