Creamy Baked Mac n Cheese Shells

Boil noodles until done. While noodles are cooking, grease a rectangular glass casserole dish. After noodles are drained and have cooled for a few minutes, put them in casserole dish. Set aside. In a medium saucepan, melt butter on medium-low heat and add flour to make a paste. Add half and half/milk and bring to a boil on medium-high heat. Reduce heat and add velveeta and cream cheese in small chunks. Stir well. After all the cheese is melted and the sauce has a medium thick consistency (you may need to play around with the half and half or milk to get the consistency you prefer), pour it over the noodles.Stir noodles with sauce until they are combined. Sprinkle chips on top. Bake in a preheated oven at 375 degrees for 30-45 minutes (I wait until it's a little browned). Note: if you decide to add the yummy bacon, fold it in with the mac n cheese BEFORE pouring in the pan to bake.