Sibby's Cupcakery

Sibby's Cupcakery No substitutes, no shortcuts—with extra smiles on top! Voted Best Party Food by Bay Area Parent and the "center of the cupcake universe" by the Bay Guardian.
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Sibby's Cupcakery is a nut-free bakery specializing in classic and custom cupcakes made the old-fashioned way: crafted from scratch and baked fresh daily, using only the finest ingredients. We've been specializing in custom cupcakes made the old-fashioned way since 2004 . Baked to order from scratch using only the finest ingredients. No substitutes, no shortcuts. With extra smiles on top.

Call up your shrink in Beverly Hills...you know the one...Dr. Everything-Will-Be-Alright...and tell him: Purple Velvet i...
06/03/2026

Call up your shrink in Beverly Hills...you know the one...Dr. Everything-Will-Be-Alright...and tell him: Purple Velvet is BACK! 💜 As we do every year, we’re celebrating Sibby’s favorite artist, Prince, with this limited-edition cupcake. 🥳💜 Purple Velvet is available for 4 days only starting today and available through Sunday, June 7 (Prince’s birthday)!

Prince’s iconic symbol is the signature decoration for this flavor, but we can do any other decoration on these as well—graduation, birthday, you name it! 💜☔️

🚨It’s LAST CALL for May flavors, y’all! 🚨Strawberry & Cream, Raspberry Passionfruit, and Neapolitan will be riding off i...
05/31/2026

🚨It’s LAST CALL for May flavors, y’all! 🚨Strawberry & Cream, Raspberry Passionfruit, and Neapolitan will be riding off into the summer sunset when we close today at 2pm, so hurry over and grab them before they’re gone!

⚾ LET’S GO, GIANTS! ⚾ Nothing goes better with sunset skies and garlic fries than Sibby’s cupcakes! 🧡 🖤
05/29/2026

⚾ LET’S GO, GIANTS! ⚾ Nothing goes better with sunset skies and garlic fries than Sibby’s cupcakes! 🧡 🖤

May is Asian American & Pacific Islander (AAPI) Heritage Month, and there’s truly no better place to celebrate than in t...
05/28/2026

May is Asian American & Pacific Islander (AAPI) Heritage Month, and there’s truly no better place to celebrate than in the Bay Area! 🌉 There are lots of fun events going on all around the Bay, so be sure to get out there and enjoy the festivities celebrating the vibrant and talented AAPI community. 🫶

Dearly beloveds: Wedding season is picking up over here, and what can we say, we LOVE THE LOVE! 🤍 💍 ⛪ Between the bouque...
05/27/2026

Dearly beloveds: Wedding season is picking up over here, and what can we say, we LOVE THE LOVE! 🤍 💍 ⛪ Between the bouquets and rings and mini cakes, our wedding decorations bring delicate (and delicious) whimsy to any special celebration.

Get ready to rock your robes and flip your tassels, y’all—it’s GRAD SEASON! 🙌🎓🧑‍🎓 Huge congrats to all SMUHSD grads who ...
05/24/2026

Get ready to rock your robes and flip your tassels, y’all—it’s GRAD SEASON! 🙌🎓🧑‍🎓 Huge congrats to all SMUHSD grads who will be walking the stage next week. Enjoy your well-earned celebrations

Take your tastebuds on a tropical vacation with one of our May Flavors of the Month: Raspberry Passionfruit! 🌴 🩷 We take...
05/23/2026

Take your tastebuds on a tropical vacation with one of our May Flavors of the Month: Raspberry Passionfruit! 🌴 🩷 We take a raspberry swirl cake and fill it with homemade raspberry coulis, then top it with passionfruit cream cheese frosting. It’s a little sweet, a little tart, and a LOT of delicious!

May is Mental Health Awareness Month, and we all deserve . 💚 Check out available resources at , and check in with your...
05/22/2026

May is Mental Health Awareness Month, and we all deserve . 💚 Check out available resources at , and check in with your loved ones regularly. Let’s lean on each other and support one another with empathy, compassion, and love.

It’s been warm and wonderful here in the Bay Area for several days now, and we’re soaking up as much sunshine as we can ...
05/21/2026

It’s been warm and wonderful here in the Bay Area for several days now, and we’re soaking up as much sunshine as we can over here! ☀️ How have you been enjoying this pre-summer weather?

🐝 Tiny pollinators. Massive impact. 🌎💛Today on World Bee Day, we’re celebrating the little buzzers that help keep flower...
05/20/2026

🐝 Tiny pollinators. Massive impact. 🌎💛

Today on World Bee Day, we’re celebrating the little buzzers that help keep flowers blooming, crops growing, and our planet thriving.

Bees pollinate nearly 1/3 of the food we eat, so yes, life really would be less sweet without them.

Drop a 🐝 below if you’re someone who would absolutely stop to watch a bee on a flower. 🌸

Address

716 S Railroad Avenue
San Mateo, CA
94401

Opening Hours

Wednesday 10am - 5:30pm
Thursday 10am - 5:30pm
Friday 10am - 5:30pm
Saturday 10am - 5pm
Sunday 10am - 2pm

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