Prep Station → Chop mushrooms fine, slice onion thin, portion turkey into 2 oz balls—set out cheese.
Mushroom Caramel → Heat ½ tbsp oil in large skillet high; add mushrooms—cook 5 minutes until golden.
Onion Sweet → Push mushrooms aside; add onions with pinch salt—cook 3 minutes until soft.
Turkey Patties → Form 12 mini patties; season with Worcestershire, garlic powder, salt, pepper.
Sear Sliders → In same skillet, cook patties 2 minutes per side until 165°F internal—work in batches.
Cheese Melt → Top each patty with Swiss slice; cover 1 minute until bubbly.
Bun Toast → Split buns; toast cut-side down in skillet 1 minute until golden.
Assemble Mini → Place patty on bun bottom; top with mushroom-onion mix and pickles.
Crown It → Add bun top; secure with toothpick if serving party-style.
Serve Hot → Plate with air-fried fries or salad—watch sliders disappear fast.