Crumble cubes into boiling water, mix to dissolve
Melt butter in a saucepan over medium heat
Add flour, onion powder and pepper
Mix into butter with a wooden spoon or whisk
While stirring, slowly pour in half the liquid
Once incorporated into the flour butter roux (it will thicken quickly), add remaining liquid and mix.
Stir for 1.5 - 2minutes until it thickens to a gravy consistency (it's quick as water is already hot).
Taste, add more salt and pepper if needed
Serve over chops, steak, sausages, veggies, roast chicken, pork, beef, lamb.