Cheese sauce mix together 3 tbsp melter butter and 1/2 cup of flour together in a crock pot and once combined add the heavy cream and buttermilk and the shredded cheddar and mozzarella whisk together until combined add the paprika the onion powder and the garlic powder whisk together and then let cook on low til cheese melts and sauce is rich and creamy and all cheese is melted about 20 minutes

Once sauce is done combine cooked noodles in crock pot and let cook in crock pot for 20 minutes and sauce should be thick

Remove from crockpot and add to a baking dish and put a bottom layer of noodle mixture and then add 5 slices mild cheddar and then add another layer of noodle mixture on top and then add 6 slices of yellow American cheese and then add another layer of noodle mixture

Top with Panko bread crumbs and shredded Monterey jack cheese and bake at 350 for 45 minutes