1. Boil 1 1/2 cups water with the bullion cube. While waiting for it to boil, put 1/2 cup water and the flour in a small sealable container.
2. Seal and shake vigorously (until it has a milky consistency.) When the stock comes to a boil, add the flour mixture (you may need to shake the container again) and whisk.
3. Remove from heat and begin frying the onions in another pan with the oil or vegan butter. After a few minutes, put the gravy in the frying pan, and add the meat substitute.
4. Cook until the gravy is thick and the meat substitute is cooked through. (about 5 minutes)
Serve over mashed potatoes with some (fresh) vegan bread on the side. Very thick and hardy. Even my meat and potatoes dad likes this one.