Crispy Japanese Sweet Potato Muffins

Featured in: Happy Bites

Enjoy golden, crispy-topped muffins featuring tender Japanese sweet potato cubes, perfectly balanced for flavor and texture. The batter includes flour, sugar, and vanilla for a soft crumb, while turbinado sugar and black sesame seeds add crunch and a nutty finish. These easy-to-bake treats are ideal for breakfast or a snack and can be enhanced with cinnamon or nutmeg for added warmth. Serve warm for the best experience, and try swapping part of the flour for whole wheat to boost nutrition. Vegetarian-friendly and customizable, they are sure to delight any palate.

Updated on Mon, 27 Oct 2025 09:53:00 GMT
Crispy Japanese Sweet Potato Muffins with a golden topping, perfect for breakfast treats.  Save
Crispy Japanese Sweet Potato Muffins with a golden topping, perfect for breakfast treats. | munchhug.com

Light and fluffy, these crispy Japanese sweet potato muffins combine the natural sweetness of Japanese sweet potatoes with a golden crispy topping. They are perfect for breakfast or as a delicious snack any time of day.

I first made these muffins when my family craved something warm and comforting but with a unique twist. The Japanese sweet potato brought a delicate sweetness, and the crispy sugar topping was a hit with everyone.

Ingredients

  • Sweet Potato: 1 medium Japanese sweet potato (about 300 g), peeled and diced
  • Muffin Batter: 2 cups (250 g) all-purpose flour, 1 cup (200 g) granulated sugar, 2 tsp baking powder, ½ tsp salt, ½ cup (120 ml) whole milk, ½ cup (120 ml) vegetable oil, 2 large eggs, 1 tsp vanilla extract
  • Topping: 2 tbsp turbinado sugar (for crunch), 1 tbsp unsalted butter, melted, 1 tbsp black sesame seeds (optional)

Instructions

Prepare Oven:
Preheat oven to 375°F (190°C). Line a 12-cup muffin tin with paper liners or grease well.
Cook Sweet Potato:
Steam or microwave the peeled and diced sweet potato for 5–7 minutes until fork-tender. Let cool slightly.
Mix Dry Ingredients:
In a large bowl, whisk together flour, sugar, baking powder, and salt.
Mix Wet Ingredients:
In another bowl, whisk milk, oil, eggs, and vanilla extract until smooth.
Combine Batter:
Add wet ingredients to dry ingredients. Stir just until combined. Do not overmix.
Fold in Sweet Potato:
Gently fold in the cooked sweet potato cubes.
Portion Batter:
Divide batter evenly among muffin cups.
Add Topping:
Brush muffin tops with melted butter, sprinkle with turbinado sugar, add black sesame seeds if desired.
Bake:
Bake for 22–25 minutes, or until golden and a toothpick inserted in the center comes out clean.
Cool:
Cool in tin 5 minutes, transfer to rack to cool completely.
A warm batch of Crispy Japanese Sweet Potato Muffins, bursting with sweet potato flavors.  Save
A warm batch of Crispy Japanese Sweet Potato Muffins, bursting with sweet potato flavors. | munchhug.com

My family loved sharing these muffins on a chilly morning with hot tea. Seeing the golden crisp topping disappear in seconds is a warm memory I treasure.

Required Tools

Muffin tin, mixing bowls, whisk, steamer or microwave-safe bowl, measuring cups and spoons, pastry brush

Allergen Information

Contains eggs, wheat (gluten), and dairy (butter, milk). Always check packaging for cross-contamination risks.

Nutritional Information (per muffin)

Calories: 210, Total Fat: 7 g, Carbohydrates: 34 g, Protein: 3 g

Deliciously fluffy Crispy Japanese Sweet Potato Muffins, ideal for a cozy snack time. Save
Deliciously fluffy Crispy Japanese Sweet Potato Muffins, ideal for a cozy snack time. | munchhug.com

Enjoy these muffins fresh from the oven with a pat of butter or a drizzle of honey. They freeze well for future snacking.

Recipe Guide

Can I substitute regular sweet potatoes?

Yes, regular sweet potatoes work well, but Japanese sweet potatoes offer a unique natural sweetness and creamy texture.

How do I achieve the crispiest topping?

Brushing melted butter and sprinkling turbinado sugar on top creates a crisp, golden finish. Black sesame seeds add extra crunch.

Can these muffins be made gluten-free?

Use a gluten-free flour blend in place of all-purpose flour. Be sure to check all ingredients for gluten cross-contamination.

What is the best way to cook sweet potato for muffins?

Steam or microwave diced sweet potato until fork-tender, ensuring they remain moist and easy to fold into the batter.

Are there variations for extra flavor?

Add cinnamon, nutmeg, or swap a portion of flour with whole wheat for deeper flavor and more nutrients.

How should I store leftover muffins?

Cool completely, then store in an airtight container at room temperature for up to three days or freeze for longer freshness.

Crispy Japanese Sweet Potato Muffins

Light muffins packed with Japanese sweet potato, topped with a crisp golden layer and black sesame seeds.

Prep duration
20 min
Heat time
25 min
Complete duration
45 min
Created by Samantha Reed


Skill level Easy

Heritage Japanese-Inspired

Output 12 Portions

Nutrition preferences Meat-free

Components

Sweet Potato

01 1 medium Japanese sweet potato (about 10.5 oz), peeled and diced

Muffin Batter

01 2 cups all-purpose flour
02 1 cup granulated sugar
03 2 teaspoons baking powder
04 1/2 teaspoon salt
05 1/2 cup whole milk
06 1/2 cup vegetable oil
07 2 large eggs
08 1 teaspoon vanilla extract

Topping

01 2 tablespoons turbinado sugar
02 1 tablespoon unsalted butter, melted
03 1 tablespoon black sesame seeds (optional)

Method

Phase 01

Prepare Muffin Pan: Preheat oven to 375°F. Line a 12-cup muffin tin with paper liners or thoroughly grease each cavity.

Phase 02

Cook Sweet Potato: Steam or microwave diced Japanese sweet potato for 5–7 minutes until tender, then allow to cool slightly.

Phase 03

Mix Dry Ingredients: Whisk together all-purpose flour, granulated sugar, baking powder, and salt in a large mixing bowl.

Phase 04

Combine Wet Ingredients: In a separate bowl, whisk whole milk, vegetable oil, eggs, and vanilla extract until homogenous.

Phase 05

Form Muffin Batter: Add wet mixture to dry ingredients and stir gently until just incorporated; do not overwork the batter.

Phase 06

Fold In Sweet Potato: Carefully fold in the cooled sweet potato cubes, distributing evenly.

Phase 07

Fill Muffin Cups: Portion batter evenly into prepared muffin tin, filling each cup two-thirds full.

Phase 08

Apply Topping: Lightly brush muffin tops with melted butter, sprinkle turbinado sugar, and add black sesame seeds if desired.

Phase 09

Bake: Bake for 22–25 minutes, or until muffins are golden and a toothpick inserted at the center emerges clean.

Phase 10

Cool and Serve: Allow muffins to cool in the tin for 5 minutes before transferring to a wire rack to cool completely.

Tools needed

  • Muffin tin
  • Mixing bowls
  • Whisk
  • Steamer or microwave-safe bowl
  • Measuring cups and spoons
  • Pastry brush

Allergy alerts

Review ingredients carefully for potential allergens and seek professional medical guidance if concerned.
  • Contains eggs, wheat (gluten), and dairy (butter, milk). Verify ingredient packaging for potential cross-contamination.

Dietary info (per portion)

Values shown are estimates only - please consult healthcare providers for specific advice.
  • Energy: 210
  • Lipids: 7 g
  • Carbohydrates: 34 g
  • Proteins: 3 g