noun
confectionery shop; candy store; sweet shop
A shop that sells Japanese or Western sweets, snacks, and candies. The お is a polite prefix commonly used in everyday speech.
駅前のお菓子屋でクッキーを買った。
I bought cookies at the sweet shop in front of the station.
このお菓子屋の和菓子はとても美味しい。
The Japanese sweets at this confectionery shop are very delicious.
Specifically a cake shop or patisserie, while お菓子屋 covers a broader range of sweets.
Compound of honorific prefix お + 菓子 (sweets) + 屋 (shop).