01 - 
                Heat a large skillet over medium heat.
              
              
              
                02 - 
                Crumble breakfast sausage into the skillet and cook, stirring occasionally, until browned and fully cooked through, approximately 5 to 7 minutes.
              
              
              
                03 - 
                Transfer cooked sausage to a paper towel-lined plate to drain excess fat.
              
              
              
                04 - 
                In the same skillet, melt unsalted butter over medium-low heat.
              
              
              
                05 - 
                Crack eggs into a bowl. Add milk, salt, and black pepper. Whisk until fully combined and smooth.
              
              
              
                06 - 
                Pour egg mixture into the skillet with melted butter. Allow eggs to begin setting at the edges before gently stirring with a spatula from the edges toward the center. Continue cooking, stirring occasionally, until eggs are softly set and creamy.
              
              
              
                07 - 
                Remove skillet from heat. Stir in cooked sausage and shredded cheddar cheese until evenly incorporated.
              
              
              
                08 - 
                Place flour tortillas on a flat work surface. Divide the egg, sausage, and cheese mixture evenly among the tortillas, placing the filling in the center.
              
              
              
                09 - 
                Fold in the sides of each tortilla and roll up tightly from bottom to top to enclose the filling.
              
              
              
                10 - 
                If desired, heat a nonstick skillet over medium heat. Place roll-ups seam side down and toast until the tortillas are golden and crisp, about 1 to 2 minutes per side.
              
              
              
                11 - 
                Serve roll-ups warm.