Try this with cauliflower "steak" slices. Recipe and video, Bon Appetit. August is cauliflower season though available all the time. Meaty, caramelized cauliflower florets and some just-this-side-of-burnt onions all tossed with grated Parmigiano.
Oven-Roasted Cauliflower with Garlic, Olive Oil, Lemon Juice & Parmesan Cheese. --- when I made this, I didn't like all the lemon juice. I added a whole lot more Parmesan than the recipe called for :) but I would use much less if any lemon juice.