8 slices bread (I used Udi’s Gluten Free Omega Flax & Fiber Bread)
1 cup shredded mozzarella cheese (I used Horizon Organic Shredded Mozzarella Cheese)
4 teaspoons freshly grated Parmesan cheese, for garnish
Chunky Marinara Sauce, store-bought or homemade (I used my recipe for Chunky Pizza Sauce that's in my Pizza Burgers post)
Instructions
Heat the oil in a medium skillet over medium-low heat; add the onion and cook a few minutes until softened (you can let it caramelize a little if you want), stirring occasionally. Add the garlic, spinach, salt, pepper, and a splash of water and cook until the spinach is wilted and the water is evaporated, stirring constantly so the garlic doesn’t burn.
Spread 1 teaspoon butter on 1 side of each slice of bread. Arrange 4 slices of bread (butter side down) on a cutting board and sprinkle 2 tablespoons of shredded mozzarella on top of each. Divide the spinach mixture between the four sandwiches, spreading it on top of the mozzarella, and then sprinkle 2 tablespoons more mozzarella on top of the spinach. Place the remaining slices of bread on each (butter side up).
Grill the sandwiches in a large frying pan (or on a griddle) over low heat until golden on both sides. Sprinkle 1 teaspoon of grated Parmesan cheese on top of each sandwich and serve warm, along with Chunky Marinara Sauce for dipping.
Recipe by An Edible Mosaic™ at https://www.anediblemosaic.com/spinach-mozzarella-grilled-cheese/