I died for this.
"Beef" Stroganoff, hold the beef.
It is entirely possible. Tastes as good as the real thing. That's what mushrooms are for: fake meat umami and a little texture.
Not gonna bother you with recipes and proportions and flavorings (hot smoked paprika). Just use your usual version, and leave out the cow.
You will be so amazed, really.
Your gut will thank you, too.
Can I get this to go viral on YouTube? It is that good.