After 15 minutes of baking, start making filling. In small bowl, beat eggs with whisk until mixed well. In 8-inch nonstick skillet, heat butter over medium-high heat until hot and sizzling. Add beaten eggs; quickly begin stirring eggs continuously with heat-resistant spatula. As eggs begin to thicken, stop stirring and cook an additional 30 to 60 seconds or until eggs are set. Fold eggs in half; turn off heat. Top eggs with shredded cheese; cover and let stand about 2 minutes or until cheese melts. Cut eggs in half. Make sausages as directed on package.