I recommend using a kitchen scale for this recipe. Check the video in the post for easy visual instructions.
Peel and chop one medium sweet potato into chunks (about 3 cm) and boil it in a pot with water for about 10 minutes or until fork-tender. Discard the water and mash the sweet potato with a potato masher (I used the same pot). You'll need 1 cup (235 g) of mashed sweet potato for this recipe.
Preheat oven to 375 degrees F (190 degrees C).
Add rice flour, tapioca flour, baking powder + salt, and mix with a spoon.
Once the mixture cooled down a little bit, use your hands to knead the pizza dough into a ball. If the dough is too dry, add a tiny bit of water or oil. If it's too sticky, add more rice flour. It should look similar to the dough in my video.
Place the pizza dough onto a sheet of greased parchment paper and add a second sheet of parchment paper on top. Use a rolling pin to roll out the dough into your preferred shape (about 0,7-1 cm thick).
Remove the top parchment paper (don't throw it away, you will need it again) and transfer the rolled-out pizza dough (including the bottom sheet of parchment paper) onto a baking sheet. Bake the pizza dough in the oven for about 10 minutes. Meanwhile, you can prepare your pizza toppings!
After 10 minutes, remove the pizza dough from the oven. Add the second parchment paper on top, and carefully flip the pizza dough over. Please don't burn your fingers! If the crust is too hot, simply wait a few minutes. Now, peel back the hot parchment paper.
Place your favorite toppings onto the sweet potato crust and return the pizza to the oven for about 10 to 18 minutes. If you just add a few toppings like vegan cheese and olives (for example) the pizza will be ready much faster than if you add lots of different veggies.
Enjoy your delicious pizza! Leftovers can be stored in the fridge for up to 3-4 days.