Grease inside of crock pot with 1 Tbsp butter. Add cauliflower, onion, garlic and celery to crockpot. Season veggies with salt and pepper and herbs.
Heat the remaining butter in large skillet over high heat. Season all sides of chuck roast with salt and pepper. Brown all sides of roast in skillet then place on top of veggies in crock pot. Add remaining liquid and cook on LOW 8-10 hours, or HIGH for 3-4 hours.