
Made with AI
Lay the 8 bread slices on a clean work surface. Spread the softened butter evenly over one side of each slice.
Turn the bread slices over so the buttered sides face down. Spread the pizza sauce evenly over 4 slices, leaving a small border around the edges.
Divide half of the mozzarella among the 4 sauce-covered slices. Top evenly with the baby spinach, then add the remaining mozzarella.
Close each sandwich with one of the remaining bread slices, keeping the buttered side facing outward.
Preheat a large skillet or griddle over medium-low heat.
Place the sandwiches in the skillet, working in batches if necessary. Cook for 3 to 4 minutes, or until the bottoms are crisp and golden brown.
Carefully flip the sandwiches and cook for another 3 to 4 minutes, pressing gently with a spatula, until the second sides are golden and the cheese is fully melted.
Remove the sandwiches from the skillet and let them rest for 1 minute. Slice and serve warm.