01 - In a mixing bowl, gently combine ground turkey, parsley, breadcrumbs, egg, salt, black pepper, onion powder, and smoked paprika until just incorporated.
02 - Divide turkey mixture into 8 equal portions; shape each into a patty slightly larger than the slider buns.
03 - Using a small bowl, blend softened butter with minced garlic, chopped chives, lemon zest, and a pinch of salt until evenly combined.
04 - Heat a large non-stick skillet or grill pan over medium heat. Spread half the garlic butter on the inside of the slider buns and toast, buttered side down, until golden. Remove and set aside.
05 - Add a small amount of oil to the skillet if needed. Cook turkey patties for 3 to 4 minutes per side until golden brown and cooked through.
06 - During the last minute of cooking, place one cheese slice on each patty and cover the pan to allow cheese to melt.
07 - Optional: Brush remaining garlic butter onto the tops of the patties or buns.
08 - Place arugula or lettuce on the bottom bun, add a turkey patty, top with sliced tomato and mayonnaise if desired, then cover with the top bun.
09 - Present the sliders warm for optimal taste and texture.