Preheat the breakfast sandwich maker. Break the egg into a small bowl and pierce the yolk with a fork.

Place the bottom half of the English muffin in the bottom compartment of the heated sandwich maker, cut side up. Top with the Canadian bacon and the pineapple ring. Lower the middle plate.

Pour the egg into the top compartment and place the top half of the muffin on the egg, cut side down. Close the sandwich maker.

Cook for 4 min., or until the egg is set. Slide open the middle plate to assemble the sandwich and remove it from the sandwich maker.