bake the sweet potatoes, fry up the onions and mushrooms and ground beef (all together if you don't need to divide for tastes)
if you need to quick pickle your radishes, do that now too - they're better the longer they've been pickled, but even an hour will be enough!
chop, dice, etc. all the veggie toppings, grate cheese. lay them all out on chopping boards or bowls or whathaveyou
lay out some baking trays, with some parchment paper if you want to make clean up easy
lay out some tortilla chips amongst the baked sweet potato wedges, and top the trays however you like!
bake at 350 until cheese is well melted, broil cautiously right at the end if you want a bit of boil and bubble
top with avocados and/or pickled radishes, and drizzle with tahini and yoghurt or keep those to the side for dunking along with the salsa
eat! **you will need napkins!**