Bread and butter pudding is the quintessential leftovers-turned-comfort-food dish. Made using any type of leftover stale bread, cheese, and add-ins you have on hand, it’s the perfect end-of-the-week dish, as you can clean out all the odds and ends from the refrigerator. I love it made with crispy bacon, but boiled ham is delicious, too. Caramelized onions give the pudding sweetness and depth of flavor, and you can always add other cooked vegetables, such as mushrooms, spinach, and leeks. Do make it the day before, to let the bread soak and the flavors develop overnight in the fridge, and let it sit for a while at room temperature before going into the hot oven. If it goes in straight from the fridge, you’ll just have to leave it in the oven a little longer. Serves 6 10 slices bacon, diced 1 tablespoon olive oil 2 large onions, thinly sliced 2 …