Very lightly butter or brush olive oil on two slices of sourdough. I used seeded sourdough, but this tastes great on plain sourdough, too. This will be the outside of your sandwich. If you use butter, you should try lightly dusting finely grated parmesan on the butter.
Spread a thin layer of basil pesto on the inside of each slice of sourdough. If you’ve got a tree nut allergy, blend together two tablespoons of olive oil, a packed handful of fresh basil, 1-2 cloves of garlic and two pinches of salt to use instead. Pile a slice with crumbled goat cheese, spinach, arugula, avocado and sliced swiss cheese. I like to add a secret sprinkle of crushed red pepper flakes. Cook both sides over medium heat. I like to use a cast iron pan to get a nice crisp on the bread. You don’t want it too hot or you’ll scorch the bread before the cheeses have an opportunity to melt. Serve hot.