This is hardly a recipe. It's a guide to making the most amazing mushrooms on toast. It has crunch it has nuts and creamy avocado. In fact it has everything you need. Make it vegan or hit it with dairy. It's up to you!
I used white miso which is quite strong. Taste the miso paste you buy before using and decide how strong it is. I only needed a heaped teaspoon.
Remember it will taste saltier if the sauce reduces.
Add ginger and or garlic . It's up to you