Preheat oven to 425. F
Drizzle sweet potato, green bell pepper and onion lightly with olive oil.
Place on a greased cookie sheet in a single layer.
Bake for 18-20 minutes.
Add in sausage during the last 5 minutes to heat it.
Generously grease a griddle with butter over low heat.
Place tortilla on griddle.
Sprinkle cheese over the entire surface of the tortilla and allow to melt slowly.
Sprinkle shredded spinach on top and allow to wilt slightly. (keep the heat low, the tortilla should not be browning or getting crisp.)
Add a layer of scrambled eggs down the center (leave enough room on the bottom and top to fold burrito style)
Add the sweet potato sausage mixture on top of the eggs.
Transfer burrito to a cutting board or plate and roll up burrito-syle. Place seam side down.
Cut at a diagonal and serve.