When there are a couple of minutes left on the timer, warm up your tortillas and place the bean dip on them, slice the avocados, place them and the lettuce on top of the bean dip. When your timer goes off the cauliflower should have some brown bits and the tempeh should be a little crunchy. Pull the sheet pan from the oven and add the hot sauce. This does not make the tacos have a ton of heat, and the avocado and lettuce really mellow out the spiciness. However, if you don't like hot sauce you can always keep it separated from the cauliflower and tempeh.