This game has a lot of potential and so far im loving it.

 for future ideas/suggestions:

• more variants/types of doughmutts
• more types/ways to fill your doughmutts
• upgrades for conveyer belt size and display trays
• auto filling upgrade but very expensive and limited
• maybe some lore 
• some customers are interactable and you can watch them stuff themselves with doughmutts 
• maybe a minigame when closing shop some rough doughmutts are stuffing themselves and you have to stop them before they drain your money dry because of 'materials' expense and when you successfully stop them you keep them for the next day's sale

that's all i can think off wish you luck on this game and looking forward to next update