Wash and pat dry mushrooms

Pop off ends and dice fine (tossing them in a food processor works great here)

Toss the diced mushroom ends and all the ingredients except the butter/2nd Worcestershire in a large bowl

Mix and mash until well combined

Use a melon baller or a teaspoon and fill the mushroom caps in mounds

Spray or butter the crockpot insert

Lay mushrooms in a tee pee fashion

Drizzle the butter or Worchestershire sauce listed last over the top

Cover and cook on low for 3-5 hours