Hold and release is definitely a great idea for one-button game! I like the concept that player’s being called “Chef Bunny” because they’re cooking a bunch of carrots, even though the bunny character never actually appears in the game. Besides, I really like the low-poly carrot/cauldron model and that fire flickering particle effect. Some details provide amusement – for example, the carrot has a dark grey color when it’s nearly raw. For suggestions, I think you can also add an over-cooked carrot model if player holds button more than eight seconds. Additionally, adding some background music and sound effect is always a good idea to enhance the gaming experience. Great work overall!