Step 1 Preheat oven to 350°F (180°C). Line a baking pan with parchment paper so paper extends slightly beyond both long ends of pan.
Step 2 In a large bowl, combine eggs and pepper. Whisk mixture or beat with mixer just until blended. Pour into prepared pan.
Step 3 Bake until cooked through and set, about 20 minutes. Remove from oven and cut into 20 (3 x 2.5-inch/8 x 6 cm) pieces. Cut rolls in half; place a piece of egg on lower half of each roll. Cover with top halves. Serve with ketchup, if desired.