If you were in the military you know what this is. It really should have dried beef but ground beef works just as well.
1 pound ground beef
1 small onion, chopped
1/2 cup butter
2 cups whole milk
1/2 cup flour
Kosher salt and pepper, to taste
Brown ground beef and onion in skillet and drain. Set aside.
In same pan melt butter and add flour to make a roux. Stir until smooth.
Add milk and stir until thick.
Add cooked beef and onion and stir to combine. Add salt and pepper to taste. Pour over prepared toast and enjoy!