The Easiest Vegan Lasagna

Packs Button Mushrooms (26.5oz / 750g in total)

Soy Sauce

(14oz/400g each) Chopped Tomato (if it has other flavorings added to it like basil, oregano or other herbs, this is great too)

Salt, Pepper, Spices (as needed - if your cans of tomato are already spiced, then further spice may not be needed).

Olive Oil

All Purpose Flour

Soy Milk (or other non-dairy milk)

Prepared Yellow Mustard

Salt

Black Pepper

Pre-Cooked Spinach Lasagna Sheets*

Sliced Tomato

Vegan Cheese Slices

Salt and Black Pepper