Combine the beef and pesto and mix well to combine. Shape the mixture into 8 patties, each about 1-inch thick.
Coat a large skillet, grill pan or griddle with olive oil preheat to medium-high. Add the sliders and cook for 1 to 2 minutes per side for medium-rare, or longer for more fully cook meat.
Transfer the sliders to the buns and top with the fresh mozzarella, sliced tomato, lettuce and/or basil. Drizzle balsamic glaze alongside (or over top) and serve.