Crumble and cook sausage in a frying pan until no longer pink. Drain most of the fat. Add onions and cook until translucent. Remove to bowl with spinach and let cool slightly before adding grated cheese. A little seasoning can be mixed in to taste: salt, pepper, basil, oregano.

Stretch pizza dough to a large rectangle. Spread spinach mixture evenly, leaving about a 1-inch border. Starting from a long side, roll the dough jelly roll style. Place seam side down on baking sheet folding under ends. Bake in 350 degree oven 20-30 minutes or until lightly brown.