Bexie's Vegetarian Mushroom Gravy

I don't really like potatoes...  unless they're smothered in this gravy.  Rock on.

• 1/2 onion
• 1/2 c. diced mushrooms
• 2 T. oil
• 2 c. vege broth or water
• 3 T. nutritional yeast
• 1 vege bouillon cube
• 1/2 t. onion powder
• 1/2 t. garlic salt
• ~3 T. flour

Saute onions and mushrooms in oil until soft, 2-3 mintues.  Add remaining ingredients, except flour, and bring to a simmer, stirring frequently.  Slowly add flour, 1 tablespoon at a time, and whisk thoroughly to combine.  Continue adding flour until gravy reaches desired thickness.