I created this recipe for lump-free, vegan mushroom gravy with mashed potatoes while on the SNAPcut Challenge, so you know it's super thrifty. My Taster said "Make it as often as you want!" This mushroom gravy uses broth created from boiling chopped potatoes for extra body and flavor. Serve it for Thanksgiving or Christmas as an alternative to turkey gravy. You'll delight the vegetarians, heart-healthy eaters, and other optivores. We like a double serving with a green vegetable for an easy, weeknight comfort meal.