This is my hubby's all time favorite recipe! He never had it growing up; how can that be? I thought it was a "staple" that every 50's housewife had. I know my Mom (rest her soul) made this alot when I was growing up. Anyway, he and the kids just love this. Hope you like it too.
In a large skillet w/ 2 tsp olive oil brown the hamburger and chopped onion. Add salt and pepper to taste. Stir until ground meat is no longer pink and the onions are soft.
Stir in the flour and add the milk, stirring constantly until gravy starts to thicken. Add Kitchen Bouquet for color (opt) and if not as thick as you would like stir 4-tbls flour into a cup of hot water and stir until flour absorbed. Then slowly add to your gravy as much as you need. Be careful of adding too much because then you will need to add more milk! Salt and pepper again if needed.
Serve over your mashed potatoes. My family likes this served with green beans. Enjoy!