Deep in the heart of Canterlot Castle, there is a magnificent oven. When it was first turned on, chefs across Equestria were said to have wept. The confections baked in its vast maw have calmed implacable enemies, have awed nobility, and have been presented to museums as works of art. Those honoured few to have used the Royal Oven are said to absorb some of its magic and even their bones in the earth remain warm.
Celestia swatted Luna's hoof which was reaching for the handle.
"But sister!"
"They have a few minutes yet, Luna."
"Yea, however the crusts are the proscribed umber and flaking!"
Celestia stepped over and peered in and frowned slightly. "Curious." She glanced at the temperature gauge, then back through the screen. "Curious..."
"Now dost thou believe me? They must be extracted at once!"
Celestia huffed. "If they are to be in error, then it shall be my error." She patted an indignant Luna with a wing before returning to the Royal Sinks to finish cleaning her mixing utensils.
"Be as thou say'st, sister..."
Celestia gave her a beatific smile. "Fret not, Luna. I will be certain to help you with your—" she stifled a giggle "—licorice-lightning marzipan soufflé cookies."
Luna's wings splayed defensively. "Neigh, thou wilt not! 'Twill be grand!"
Celestia stuck out her tongue. "Love you too, Lu-lu."