Add all filling ingredients to a bowl and mix until combined.
Warm taco shells. Add taco shells to a sheet pan lined with parchment paper or a nonstick sheet pan. Add 2-3 tablespoons of filling to each shell. Fold tacos over and flip so the filling side is on the top. This is crucial to keep the tacos closed.
Bake tacos for 20-30 minutes, flipping once halfway through. You want the shells to be browned and crisp.
Notes
*I cooked my sweet potato at 400 degrees for about 45 minutes. I think canned sweet potato puree would work but I have not tested this. You can prep your cooked sweet potato the night before/ several days before.