You take the clean knife in your free hand. The other two knives start levitating, as vegetables, meat, utensils, and other cooking supplies fly out every which way from cupboards, and a small room behind the door across from the stove. You watch in amazement as an entire meal is crafted before your eyes, and then sent into the deeper rooms in the house, out of sight, plated, and smelling delectable.
The two floating knives wipe themselves off, and return to their places, somehow still looking bloody.
You can still:
take the other knives,
look in the cupboards,
try operating the stove, or
open the door opposite the stove.
You also feel quite hungry after seeing all that food plated, fresh and tantalizing. You could always look inside the pot to see what's cooking.