Make Curry Filling

Cup of Yum
1. Add the sliced kabocha to a microwave-safe bowl along with 1 tablespoon of water. Cover the bowl with a lid or plastic wrap and microwave until the kabocha is tender (about 2 minutes at 600 watts).
2. In a frying pan over medium heat, add the vegetable oil, onions, garlic, and ginger, and saute until the onions are tender and caramelized.
3. Add the ground beef and use a spatula to crumble until it's cooked most of the way through.
4. Add the curry powder and soy sauce and stir-fry until any liquid has evaporated, and the curry is fragrant.
5. Add the ketchup and cooked kabocha and mash the mixture together with a spatula or potato masher.

Make Curry Bread

1. Spread the room temperature butter onto one side of each slice of bread. It's helpful to think about how the bread fits together before doing this as you want the butter on the outside surfaces of the sandwich (not the inside).
2. With the buttered side of two slices of bread facing down, add a slice of cheese to each.
3. Top each slice of cheese with half of the curry mixture. Spread the mixture around to form an even layer, but don't go all the way to the edges.
4. Cover the curry with the remaining two sliced of bread with the buttered surface facing up.
5. Pan-fry the sandwiches one at a time in a frying pan over medium-low heat. Use a small flat lid to gently press on the sandwich, so the bread makes even contact with the pan.
6. When the sandwich has browned on one side, flip it over and place the lid back on the sandwich and let the other side brown.