While planning a trip to Boracay, I kept hearing about these famous calamansi muffins from Real Coffee - the ones tourists line up for and bring home by the boxful. I never got to try the original on that trip, but the idea followed me home. So I recreated them using fresh calamansi from our backyard tree. Now these bright, citrusy muffins are in steady rotation - breakfast, merienda, "I need something sweet at 3pm," all of it.
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Jump to:
- What Is Calamansi?
- Why You'll Love This Recipe
- Ingredients You'll Need
- Step-by-Step Instructions
- Optional: Crumb Topping
- Variations
- How to Store Leftovers
- Quick tips for tall, tender muffins
- More Ways to Use Calamansi
- Recipe FAQs
- More Filipino Desserts
- Did you try this recipe?
- Calamansi Muffins with Citrus Glaze
What Is Calamansi?
Calamansi (also spelled kalamansi) is a small, round citrus fruit native to the Philippines. It's often called "Philippine lime" or "calamondin." The fruit is about the size of a large grape - green when unripe, orange when ripe - with a flavor that's somewhere between lime, lemon, and mandarin orange.
It's more complex than regular lime - brighter, slightly sweeter, with a floral note that makes it perfect for both savory dishes and desserts. Filipinos use it in everything from marinades and dipping sauces to drinks and baked goods.
Can't find fresh calamansi? Look for frozen calamansi juice or calamansi concentrate at Asian grocery stores. You can also substitute with a mix of lime juice and a splash of orange juice (about 3:1 ratio) to mimic the flavor.
For more ways to use this citrus, check out my calamansi juice recipe.
Why You'll Love This Recipe
- Bright, citrusy flavor - that sweet-tart calamansi punch in every bite
- Soft and moist - sour cream keeps the crumb tender
- Tall, domed tops - the two-temperature baking method creates bakery-style peaks
- Simple ingredients - no fancy equipment needed
- Perfect anytime - breakfast, merienda, dessert, or 3pm snack
- Glaze optional but recommended - tangy, sweet, and soaks in beautifully
Ingredients You'll Need
For The Muffins
- All-Purpose Flour: Provides the structure for the muffins, ensuring they have the right texture and crumb.
- Baking Powder: This helps the muffins rise, making them light and fluffy.
- Granulated Sugar: Adds sweetness and helps to create a tender crumb.
- Butter: Adds richness, moisture, and a delicious buttery flavor to the muffins.
- Eggs: Bind the ingredients together and add structure and moisture to the muffins.
- Vanilla: Adds a warm, sweet aroma and enhances the flavor of the muffins.
- Whole Milk: Provides moisture and a tender texture, contributing to the overall richness.
- Calamansi Juice: Key ingredient that gives the muffins their distinctive tangy and citrusy flavor.
- Sour Cream: Adds moisture and a slight tang, ensuring the muffins are tender and rich.
For the Citrus Glaze
- Powdered Sugar
- Calamansi Juice (fresh or bottled)
Substitution and Addition
- Butter: swap with coconut oil or neutral oil (dairy-free)
- Sour cream: Greek yogurt works great
- Calamansi juice: mix lime + orange to mimic the flavor
- Calamansi juice concentrate: totally workable, just dilute if it’s very strong and taste as you go
- Add-ins: shredded coconut, poppy seeds, sliced almonds, or a cream cheese swirl
- Calamansi zest: For extra color and flavor.
Step-by-Step Instructions
- Preheat your oven to 400°F (205°C) and line a muffin tin with paper liners.
- In a medium bowl, whisk together the flour, baking powder, and salt.
- In a separate bowl, cream together the softened butter and sugar until light and fluffy. Beat in the eggs one at a time, then stir in the vanilla extract.
- Add the calamansi juice and whole milk.
- Add the dry ingredients and the wet ingredients . Mix until just combined, being careful not to overmix.
- Fill the prepared muffin cups ¾ full with batter.
- Bake for 5 minutes at 400°F (205°C). This initial high heat helps the muffins rise quickly for that perfect peak.
- After 5 minutes, reduce the oven temperature to 350°F (175°C) and continue baking for 15-20 minutes, or until a toothpick inserted into the center comes out clean.
- While the muffins cool, prepare the glaze by whisking together the powdered sugar and calamansi juice until smooth. Adjust the amount of calamansi juice for your desired consistency – thicker for drizzling, thinner for a glaze that will soak into the muffins.
- Once the muffins are cool, drizzle or brush the glaze over the tops.
Optional: Crumb Topping
For a Real Coffee-style crumb topping, mix before baking:
- ¼ cup all-purpose flour
- 2 tablespoons sugar
- 2 tablespoons cold butter, cubed
Combine flour and sugar. Cut in cold butter with a fork or your fingers until crumbly. Sprinkle over muffin batter before baking. The crumb adds a light crunch that contrasts beautifully with the soft muffin.
Variations
- Calamansi Coconut Muffins - Add ½ cup shredded coconut to the batter for tropical vibes.
- Calamansi Cream Cheese Muffins - Swirl a tablespoon of softened cream cheese into the center before baking.
- Calamansi Poppy Seed Muffins - Add 2 tablespoons poppy seeds for crunch and a classic pairing.
- Calamansi Almond Muffins - Fold in chopped almonds or top with sliced almonds before baking.
- Mini Calamansi Muffins - Use a mini muffin tin, reduce bake time to 10-12 minutes total.
- Calamansi Cupcakes - Same recipe, pipe with cream cheese frosting for a party version.
How to Store Leftovers
- Room temp: airtight container up to 2 days
- Fridge: up to 5 days
- Freezer: up to 1 month
- Reheating: Thaw at room temp or in the fridge. (A 10-second microwave zap also works for that “fresh baked” softness.)
Quick tips for tall, tender muffins
- Start hot, then lower Bake at 400°F for the first 5 minutes, then drop to 350°F. That initial blast of heat makes the muffins rise fast and dome up beautifully.
- Don't overmix Stir until the flour just disappears. Lumpy batter is fine - even good. Overmixing develops gluten and creates tough, tunneled muffins.
- Room temperature ingredients Softened butter and room-temp eggs mix more evenly, creating a lighter crumb.
- Fill cups ¾ full This gives you height without overflow. Use an ice cream scoop for consistent portions.
- Add dry to wet in stages Add half the flour mixture, then the milk mixture, then the rest of the flour. This ensures even distribution without overworking the batter.
- Use fresh baking powder Old baking powder = flat muffins. If yours has been open more than 6 months, test it (drop in hot water - it should bubble vigorously).
- Glaze after cooling Warm muffins will melt the glaze right off. Let them cool at least 15 minutes before drizzling.
More Ways to Use Calamansi
Got extra fruit or juice? Try these:
- Drinks: Calamansi juice, sparkling water with calamansi, cocktails
- Marinades: Perfect for chicken inasal and bistek
- Dressings: Calamansi + olive oil + soy sauce + honey
- Dipping sauces: Squeeze over grilled meat or seafood
- Other desserts: Bars, curd, tarts, pound cake
Recipe FAQs
Check that your baking powder is fresh and active. Also make sure you preheated the oven fully and didn't overmix the batter.
Insert a toothpick into the center. If it comes out clean (or with just a few moist crumbs), they're done. The tops should be golden and spring back when lightly touched.
The consistency is easy to adjust. Add more calamansi juice a teaspoon at a time for a thinner glaze that soaks in. Add more powdered sugar for a thicker drizzle.
Mix 3 parts lime juice with 1 part orange juice. Lime brings the tartness, orange adds the slight sweetness that mimics calamansi. The flavor won't be identical (less floral), but it works well.
Yes! Bottled or frozen calamansi juice works. Fresh gives a brighter flavor, but bottled is convenient. Just make sure it's 100% juice with no added sweeteners.
Yes, but dilute it first according to package directions. Concentrate is stronger, so taste as you go.
That's normal! The acid in the calamansi reacts with the milk and sour cream, causing slight curdling. This actually helps create a more tender crumb - don't worry about it.
More Filipino Desserts
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Calamansi Muffins with Citrus Glaze
Equipment
- 1 MIxing Bowl
- 1 Muffins Tiin
- 1 Muffin Liner
Ingredients
Muffin
- 2 cups All-Purpose Flour
- 2 teaspoon baking powder
- 1 teaspoon salt
- ¾ cup granulated sugar
- ½ cup butter
- 2 whole eggs
- 2 teaspoon vanilla
- ¼ cup whole milk
- ¼ cup calamansi juice
- ¼ cup sour cream
Calamansi Glaze
- ¼ cup powdered sugar
- 1½-2½ tablespoon calamansi juice
Instructions
- Preheat your oven to 400°F (205°C) and line a muffin tin with paper liners.
- In a medium bowl, whisk together the flour, baking powder, and salt.2 cups All-Purpose Flour, 2 teaspoon baking powder, 1 teaspoon salt
- In a separate bowl, cream together the softened butter and sugar until light and fluffy. Beat in the eggs one at a time, then stir in the vanilla extract.¾ cup granulated sugar, ½ cup butter, 2 whole eggs, 2 teaspoon vanilla
- Add the calamansi juice, sour cream and whole milk.¼ cup whole milk, ¼ cup calamansi juice, ¼ cup sour cream
- Add the dry ingredients and the wet ingredients . Mix until just combined, being careful not to overmix.
- Fill the prepared muffin cups ¾ full with batter.
- Bake for 5 minutes at 400°F (205°C). This initial high heat helps the muffins rise quickly for that perfect peak.
- After 5 minutes, reduce the oven temperature to 350°F (175°C) and continue baking for 15-20 minutes, or until a toothpick inserted into the center comes out clean.
- While the muffins cool, prepare the glaze by whisking together the powdered sugar and calamansi juice until smooth. Adjust the amount of calamansi juice for your desired consistency – thicker for drizzling, thinner for a glaze that will soak into the muffins.¼ cup powdered sugar, 1½-2½ tbsp calamansi juice
- Once the muffins are cool, drizzle or brush the glaze over the tops.
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Notes
- For the perfect muffin peak, preheat your oven to 400°F (205°C) for the initial 5 minutes of baking. This jumpstart creates a quick rise for those impressive domes!
- Don’t overmix or you’ll get tougher muffins. Lumpy batter is normal.
- If using Calamansi juice concentrate- dilute per label to make ⅓ cup juice (or start with a little concentrate + water and taste).
- No calamansi? Use 2 tablespoons lime juice + 2 tablespoons orange juice (then add more to reach ⅓ cup).
- Storage: airtight container 2 days room temp, 5 days fridge, or freeze 1 month.
