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.
Slowly pour in half the liquid while stirring.
Add remaining liquid and mix well.
Stir for 1.5 - 2 minutes until thickened to gravy consistency.
Taste, adjust salt and pepper as needed.
Serve over chops, steak, sausages, veggies, roast chicken, pork, beef, lamb.