here is a quick and easy recipe for you fry your mince up and break down as you fry it with small onion if you have one, if you don't make it without it. then make a rue or white sauce.
melt 3 tablespoons of butter add 3 tablespoons of flour , and milk , salt and pepper stiring for on minute. You will want it to be consistency of heavy cream. Spread this over toast.
My kids loved this when they were little.
Let me know how you liked it.