1. Prep the avocado: Peel the avocado and take out the pit. Mash in a bowl with a fork and set aside.
2. Toast the bread: Toast the bread in a toaster until golden brown (I use the #3 on my dial).
3. Prep the bread for the skillet: Spread 1/2 tablespoon butter on one side of each slice and 1 teaspoon miso paste on the other side.
4. Fry it: In a large skillet over medium high heat, place the bread slices, butter side, down. Pan fry for 1-2 minutes, until you get a nice crispy top, and flip the bread over. Toast for 1 minute and transfer to a plate.
5. Add the avocado mash: Spread equal amounts of avocado on each slice and sprinkle gochugaru on top.
6. Season and serve: Season with a little salt if necessary – miso is quite salty on its own – and serve.

Optional: serve with an egg on top for a more substantial meal.