Peanut Butter Mochi Cake

I stumbled onto this cake during a rainy Sunday afternoon when my pantry held random odds and ends but nothing that looked like a proper dessert. The combination of sweet rice flour and peanut butter sounded strange until I pulled it from the oven and caught that buttery, nutty scent filling the kitchen.

My college roommate walked in while it was cooling and asked why I was making a block of concrete. Then she tried a piece and stood there eating it over the counter until half the pan was gone. Now she demands I bring one to every game night.

Ingredients

• Sweet rice flour: This creates the signature chewy texture so do not swap it for regular rice flour or allpurpose flour
• Granulated sugar: Sweetens the batter while helping form that slightly crisp golden crust on top
• Baking powder: Gives the cake just enough lift to stay tender without losing its characteristic dense chew
• Salt: Balances sweetness and makes the peanut flavor pop instead of fading into the background
• Whole milk: Adds richness and helps create that creamy interior texture
• Coconut milk: Brings subtle depth and keeps the cake incredibly moist
• Eggs: Bind everything together while providing structure
• Creamy peanut butter: The star of the show melted into the batter for pockets of nutty flavor
• Unsalted butter melted: Adds a buttery undertone that rounds out the peanut butter richness
• Vanilla extract: Enhances all the flavors and makes everything taste more cohesive

Instructions

Preheat and prep the pan:

Set your oven to 350°F and grease a 9x13inch baking pan or line it with parchment paper so nothing sticks later.

Mix the dry ingredients:

Whisk together the sweet rice flour sugar baking powder and salt in a large bowl until they look uniform.

Combine the wet ingredients:

Whisk the milk coconut milk eggs peanut butter melted butter and vanilla in a separate bowl until the peanut butter disappears into a smooth mixture.

Make the batter:

Pour the wet ingredients into the dry ones and whisk until completely smooth with no lumps remaining.

Transfer to the pan:

Pour the batter into your prepared pan and tap it gently on the counter to release trapped air bubbles.

Bake until golden:

Bake for 45 to 50 minutes until the top turns golden brown and a toothpick inserted in the center comes out clean.

Cool completely:

Let the cake cool completely in the pan before slicing or it will be too soft and gummy to cut neatly.

Serve and store:

Cut into squares and serve at room temperature or chilled storing leftovers in an airtight container in the fridge.

Save

This became my go-to when I need something that feels special but barely requires effort. Last summer I brought one to a potluck and three different people asked for the recipe before they even finished their first slice.

Make It Your Own

Spread roasted peanuts over the batter before baking for a salty crunch that contrasts beautifully with the chewy cake underneath.

Serving Ideas

A dollop of whipped cream or fresh berries on top cuts through the richness and makes each serving feel more elegant.

Storage Secrets

This cake actually gets better after a day or two in the refrigerator as the flavors meld and the texture becomes more pronounced.

• Keep it wrapped tightly to prevent the cake from drying out
• Let chilled slices sit at room temperature for ten minutes before serving
• The texture firms up overnight making it easier to cut clean squares

Save

Theres something about the way the chewy mochi texture meets that familiar peanut butter flavor that makes people pause and take another bite.

Recipe FAQs

→ What gives this mochi cake its chewy texture?

The chewy texture comes from sweet rice flour, also known as glutinous rice flour, which creates a tender, elastic crumb distinct from regular wheat flour.

→ Can I substitute the coconut milk with another milk?

Yes, evaporated milk or regular dairy milk can be used for a lighter or creamier taste without affecting the overall texture significantly.

→ How do I ensure the cake doesn't dry out during baking?

Baking at 350°F and checking with a toothpick for doneness helps keep the cake moist. Avoid overbaking and allow it to cool in the pan.

→ Is it possible to add a crunchy texture to the top layer?

Sprinkling roasted peanuts on top before baking adds a pleasant crunchy contrast to the soft cake layers.

→ How should leftovers be stored to maintain freshness?

Store leftovers in an airtight container in the refrigerator. This preserves moisture and flavor for several days.