1Making Gravy: Melt butter in a large sauce pan and saute the diced onion till they're clear. Add flour and mix till it forms a thick paste.
2add the broth slowly, stirring it into the flour roux till it is incorporated and thinned out.
3Add the Diced turkey, salt and pepper, tasting and adjusting as necessary and allow to simmer on low till it is reduced
4place bread slices on plate (two per serving) and spoon out the turkey and gravy to cover the bread.
Serve Open faced.
If you prefer, you can serve the turkey and gravy over leftover potatoes or stuffing.... or you can use the leftover potatoes or stuffing as an extra layer to your sandwich. I also like to add a little cranberry relish on the side.