There was an article in NPR for making Sweet potato avocado 'toast'...but it was just slices of sweet potatoes, no bread involved. I made that yesterday and it was a 10 out of 10 for us.
2 large sweet potatoes, boiled until just about done, slice into bread slice thicknesses, bake in the oven on parchment at 350 deg F for about 20 minutes, to dry it out a little. Poke holes in them with a fork so things stick to them.
Top with: mashed avocado
a little salsa
fresh chopped tomatoes
fresh chopped parsley
fresh sliced green onions
pumpkin seeds (or chopped walnuts)
broccoli sprouts
Serve the potato slices hot, with room temperature toppings. Delicious!