Preheat the oven to 200 degrees. Make a few holes in the sweet potatoes with a fork, then bake them for 40-50 minutes or until tender. They are done when a fork can be pressed into the centre easily. Set aside to cool them down.
Combine the salt and 2 cups of the flour. Flour a work surface and pour your flour mixture onto the surface. Make a well in the middle of the flour.
Once the sweet potatoes are cool, remove the skin and mash the flesh with the fork. You want to achieve a doughy consistency.
Begin working the sweet potato into the flour. Continue to work the mixture until it's thoroughly combined. Keep adding flour until you get a nice dry dough.
Once thoroughly combined, roll the dough into a ball and cut it into even pieces. Next, roll each piece into a long, thick log. Next, cut it into 3 cm pieces. Gently toss each piece into flour to ensure it's dry and not sticky at any edges. Continue until you've cut out pieces from all of the dough.
Shape gnocchis by pressing fork grooves into each piece.
Heat a pot of salted water to a boil. Add in the gnocchi and let cook for a couple of minutes. Once the gnocchi floats to the water's surface, let it boil for 30 more seconds and then remove it using a slotted spoon.
You can keep gnocchi in the fridge, or freeze for a few weeks. To serve, toss them in your favourite sauce and enjoy!