This easy “baked” ziti meal will appeal to vegans and meat eaters alike. The flavors are all well combined, and the dish is comforting and hearty. The mushrooms and eggplant add meatiness and texture, while the pasta starch creates a creaminess that recreates what you’d find in a pasta with cheese. In other words, this is perfect without meat or cheese. To prevent burning in the Instant Pot, keep the tomato products as close to the top as possible, especially when you’re using a large quality like this recipe calls for.