Blend the soybean pulp until smooth and set aside.
Drain the canned corn using a sieve to remove excess moisture.
Mix the soybean pulp, corn, shredded cheese, sugar, salt, and pepper in a bowl.
Fill the donut molds about 70% full with the batter.
Bake in a preheated oven at 180°C for 20 minutes.
Brush the outside with butter to finish.