First, marinate your meat by mixing thoroughly with sugar, soy sauce, and sesame oil. I used meat for fondue, but if you've got the skills, you can thinly slice striploin.

As your meat sits, slice cheddar so it covers the entire surface of your bread. Do this twice for both slices.

Butter both slices of bread.

Dice kimchi into small pieces

Heat a pan with a little oil, and fry meat until it's cooked through. A little crisp won't hurt.

Mix in kimchi into meat to heat, and remove from pan.

Assemble sandwich like so bread -> cheese -> bulgogi + kimchi -> cheese -> bread

Place in pan and fry until golden brown, flip and repeat

Enjoy when hot!