01 -
Heat olive oil in a non-stick pan over medium heat. Add the spinach and sauté for 5-6 minutes until it wilts down. Sprinkle with a pinch of salt, stir, and transfer to a plate. Wipe the pan clean with a paper towel.
02 -
Spread butter on one side of each slice of bread. Place two slices of bread, buttered side down, in the cleaned pan.
03 -
Spread the chopped sun-dried tomatoes over the unbuttered side of the bread slices in the pan, pressing them gently so they stick. Add half of the crumbled feta cheese, half of the shredded cheddar cheese, and the cooked spinach on top. Sprinkle the remaining feta and cheddar over the spinach. Finish with a pinch of oregano and crushed chili flakes. Place the remaining slices of bread on top of the sandwiches, buttered side up.
04 -
Heat the pan over medium heat and cook for about 5 minutes, until the bottom of the bread is golden brown. Carefully flip the sandwiches and cook for another 5 minutes until the other side is toasted and the cheese is melted and gooey.
05 -
Sprinkle with extra oregano and chili flakes if desired. Optionally, drizzle a bit of honey over the top for a hint of sweetness, and serve immediately.