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Home » Recipes » Cakes & Cupcakes

March 18, 2026

Small Batch Chocolate Cupcakes with Oil

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When I tell you that these are the best chocolate cupcakes I've ever had, I really mean it. This oil-based cake is super easy, comes together in one bowl, and makes just 6 perfectly fluffy servings. If you're looking for the best small batch chocolate cupcakes, then you have to give this recipe a try!

Rows of small batch chocolate cupcakes next to a white pitcher on a white background.

My dad is an absolute chocolate cake fiend. I've never seen anything like it. So naturally, for his last birthday, I set out to make the best-ever chocolate cupcake recipe.

It's taken me almost 6 months, but I've finally found the right combo that makes for a deeply rich, fudgy, and not-too-sweet dessert. The recipe is based on the chocolate cake that I originally developed in pastry school. It's an oil-based cake that is always moist, fluffy, and lasts for days on the counter.

While some of the ingredients might seem a little weird, I promise that every ingredient helps make this recipe even better. Of course, if you want to simplify it a tad, I'll add some tips in the recipe card. 🙂

Top these cakes with either my chocolate buttercream or this fluffy whipped ganache frosting if you like something less sweet. Both are absolutely unreal.

(P.S. Can confirm that my dad said these are the best cupcakes he's ever had!)

Boiling water tip

White bowls of flour, cocoa powder, oil, sugar, brown sugar, buttermilk, water, and vanilla next to an egg on a tan counter.

The key for really bringing out that chocolate flavor is a little boiling water. The hot water helps "bloom" the cocoa, which makes the flavor deeper and richer.

I also like to add a little espresso powder because it can bring out even more flavors in the cocoa. Of course, if you don't have espresso powder on hand, you can leave it out. (But it's totally worth investing in a jar. I also like it in small batch brownies.)

Bake the cupcakes

A white bowl of oil, sugar, vanilla, and an egg on a white counter.
Add the oil, sugars, egg, vanilla, & buttermilk to a medium mixing bowl.
A hand using a whisk to mix oil, sugar, and an egg in a white bowl.
Whisk the wet ingredients until the mixture is very smooth, about 1 minute.
A white bowl of flour and cocoa powder on a white counter.
Then, add the flour, cocoa, baking powder, baking soda, salt, & espresso powder.
A white bowl of chocolate batter on a white counter.
Once the batter is about 75% mixed, stir in the boiling water until smooth.
A pan of raw small batch chocolate cupcakes on a beige table.
Divide the batter between 6 cupcake liners, filling them about ¾ full.
A pan of baked small batch chocolate cupcakes on a beige counter.
Bake the cupcakes at 350°F (177°C) for 17-20 minutes. Cool completely.

This recipe will also make enough batter for 8 cupcakes! Just reduce the bake time to 14-16 minutes instead.

Rows of small batch chocolate cupcakes on a white counter.


When it comes to small batch baking, I always recommend using a scale to measure the ingredients. Just a small amount of flour can make or break an entire recipe. But if you don't have a scale, use the fluff, spoon, & level method to measure flour, cocoa, & other dry ingredients. Here is a whole guide on how I measure ingredients for small batch baking!


If you try this recipe, I would love if you left a star rating and review. I read every comment and love hearing what you think about my recipes. Thanks so much for supporting Midnight Bake Club!

The Best Small Batch Chocolate Cupcakes

These are the best small batch chocolate cupcakes ever! Topped with chocolate buttercream or whipped ganache frosting, they're rich, fudgy, and make just 6 servings. And since the recipe is oil-based, they stay moist and fluffy for days.
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Prep Time 15 minutes mins
Cook Time 20 minutes mins
Total Time 35 minutes mins
Course Dessert
Cuisine American
Servings 6 cupcakes

Equipment

  • Medium mixing bowl
  • Whisk

Ingredients
  

  • 60 grams all purpose flour (½ cup)
  • 20 grams Dutch process cocoa powder (¼ cup)
  • ½ teaspoon baking powder
  • ¼ teaspoon baking soda
  • ⅛ teaspoon Kosher salt I use Diamond
  • ½ teaspoon instant espresso powder optional
  • 60 milliliters neutral oil I use avocado oil (¼ cup)
  • 50 grams granulated sugar (¼ cup)
  • 50 grams dark brown sugar (¼ cup, packed)
  • 1 large egg room temperature
  • ½ teaspoon pure vanilla extract
  • 60 milliliters buttermilk or whole milk (¼ cup)
  • 30 milliliters boiling water (2 Tablespoons)

Instructions
 

  • Preheat the oven to 350°F (177°C). Line a cupcake pan with 6 paper liners. Then, add the flour, cocoa powder, baking powder, baking soda, salt, and espresso powder to a small mixing bowl. Whisk and set aside.
  • Combine the neutral oil, granulated sugar, brown sugar, egg, vanilla extract, and buttermilk or whole milk in a medium mixing bowl. Whisk until smooth, 1-2 minutes.
  • Then, sift the dry ingredients into the wet ingredients. Whisk until the batter is about 75% mixed.
  • Add the boiling water to the batter. Mix just until the batter is combined and there are no more streaks of flour or cocoa powder.
  • Using a cupcake scoop, divide the batter between the 6 paper liners. They will be about ¾ of the way full. Bake the cupcakes for 17-20 minutes, just until an inserted toothpick has a few moist crumbs.
  • Let the cupcakes cool in the pan for 5 minutes. Then, transfer them to a wire rack to cool completely. Frost with small batch chocolate buttercream or whipped chocolate ganache and enjoy!

Notes

It's very important to weigh the ingredients with a scale instead of measuring cups. Even just a little extra flour or cocoa powder can make the cupcakes dense and dry. But, if you don't have a scale, here's how to measure the flour and cocoa powder. First, fluff it with a whisk. Spoon the fluffed flour or cocoa powder into the measuring spoon and level it off without packing it in.
The instant espresso powder makes the cupcakes taste more chocolatey, but it's totally optional.
I like adding brown sugar for a note of caramel flavor, but you can always use all granulated sugar if you prefer.
Buttermilk will make the cupcakes more tender. To make your own, whisk 55 milliliters of whole milk with 5 milliliters of white vinegar, and let it sit for 5-10 minutes. Or, you can use all whole milk.
Don't skip the boiling water! The hot water will help "bloom" the cocoa powder, which brings out more of the chocolate flavor.
This recipe will make enough for 8 smaller cupcakes if you want to stretch the servings. Start checking for doneness at 14 minutes.
The nutrition information is just for the cupcakes, not frosting or any other toppings.

Nutrition

Serving: 1cupcakeCalories: 207kcalCarbohydrates: 27gProtein: 3gFat: 11gSaturated Fat: 2gCholesterol: 28mgSodium: 166mgFiber: 2gSugar: 17gIron: 1mg
Keyword 6 servings, chocolate, cupcakes, small batch baking
Tried this recipe?Let us know how it was!

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Hi, I'm Sara!

I am a trained pastry chef who loves listening to music & baking late into the night. Here, I'm sharing my go-to small batch baking recipes for any late night craving.

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