make the stuffing - using the instructions on the box or make your own favorite recipe (you'll end up with about 3 cups of prepared stuffing)
place a slice of turkey in an ungreased 8x10-inch baking pan
place 1/3 cup of stuffing into the turkey slice and roll it up
place it seam side down or secure it with a wooden toothpick that you have soaked in water (for about 10 minutes)
continue to stuff all of your turkey slices and roll each one up
bake at 325 degrees for 20 minutes
while that is baking, make the gravy
make a roux by melting the butter in a skillet
add the flour to the butter and mix well
add water and whisk until smooth
add the bouillon and seasoning
continue to whisk until it is the thickness and texture that you want
if needed: strain any lumps out of gravy that might not have thinned out with whisking
pour half of the gravy over the baked turkey roll-ups and save the rest for serving