Pierce the large sweet potatoes all over with a fork. To roast in the oven, wrap in foil and bake at 425°F for 45-60 minutes. To make baked potatoes in the microwave, wrap each sweet potato in a damp paper towel and microwave for 10 minutes, 5 minutes each side. Be careful when flipping, they will be hot! Once cooled enough to handle, scoop the sweet potato flesh into a bowl and mash, then add 10oz ricotta cheese, ¾ cup parmesan cheese, 2 Tbsp brown sugar, and 2 tsp salt and mix thoroughly.
Add in 2¾ flour ~½ c. at a time, until a soft and slightly sticky dough forms. Don't over-mix
Begin heating a large pot of water to a boil while forming the gnocchi.
Flour your cutting board or surface and turn out a small batch of dough and roll into a rope. I usually use a small palm-sized amount at a time. Flour liberally to keep from sticking, and cut each rope into 1" pieces with a knife or bench scraper.Set aside and repeat until all dough has been shaped. Once the water is boiling, working in batches, add in the gnocchi. Ensure it doesn't stick to the bottom of a pan, you can do this by stirring to make a little whirlpool before adding the gnocchi. Cook 3-5 mins or until the gnocchi rise to the surface and float.
Remove to a colander or bowl and occasionally spray or coat with oil and give a little toss to keep the gnocchi from sticking. I usually do this once every couple of batches.
Proceed immediately if desired. If making ahead, these oiled gnocchi can be stored in the fridge for 1-3 days in an airtight container for use later that week, or frozen for up to 6 months in the freezer. Thaw or let come to room temperature before using.