Herbs, Avocado & Spinach gives this grilled cheese incredible flavor and texture.
In a food processor, add the pesto ingredients, basil, parsley, scallions, pine nuts, garlic, and lemon juice. Blend until all the ingredients are well combined.
In a large skillet, on medium heat, add the teaspoon of butter.
Once the butter is melted, add the two slices of sourdough. Flip so both sides are toasted evenly.
Take the toasted bread off the skillet. Add the pesto, havarti cheese, mozzarella cheese, spinach and avocado to the bread. Top with the other piece of bread
Add the sandwich back to the skillet. Cook on each side for about 5 minutes, or until the cheese is melted to your liking!