12SlicesBread(sourdough, ciabatta, focaccia, or white bakery bread)
2large Tomatoes(sliced into ¼" slices)
(1)16-ounce ballFresh Mozzarella Cheese
Preheat panini grill, if using. Spread pesto on each slice of bread. Place mozzarella slices on top of pesto.
Layer with fresh tomatoes. Sprinkle with salt. Place the remaining slices of bread, pesto side down, on top.
Spread the top and bottom of bread with softened butter. Grill the sandwiches on panini grill, about 3 minutes per side. The paninis are done when the cheese is completely melted and the bread is toasted and golden.
**If you don't own a panini grill, you may use a skillet. Heat over medium-low heat and flip after 3-4 minutes.
I used sourdough bread but you can use your favorite panini bread such as ciabatta, focaccia, or bakery white bread.