Yesterday I roasted red peppers and fried up some mushrooms and onions. I marinated those in oil & balsamic vinegar plus chopped parsley and crushed hot peppers, and then I started a sponge for my bread that I made today. No rye flour, but it was an overnight fermented buttermilk sponge so it was pretty good and smells great (a sponge is in it's simplest form water yeast and flour, which is nicer for yeast to take off in, and it's more convenient for aging overnight as it doesn't run the risk of rising so much that the yeast pushes all the food away from it).
On the bread went a small amount of mayo & mustard, sliced cheddar, shaved ham, and then both open-faced sandwiches were topped with the marinated veg.
It was pretty tasty! Peppers and onions were boss. Best sandwich: probably not.
Thoughts for next time: crush some mustard seed, add to the marinate, scrap the mustard on the bread. Also, the mushroom flavour was mostly lost beneath the balsamic vinegar, though the texture was nice.
Would it benefit from being on rye? Maybe. Probably.
Would there be a better cheese than cheddar? Swiss goes well with ham, but I think the gentle flavour of swiss would get lost beneath the balsamic.
Closed face? Definitely not. Those marinated veg look too good mounded up on top to hide them. I think the proportions of everything were right on where they should be.