Chocolate Blackberry Cupcakes

Featured in Treats That Make Everything Better.

Blend blackberries into chocolate batter, bake until soft and airy, then spread sweet blackberry buttercream for a tasty chocolate-berry dessert.
Clare Recipes
Updated on Thu, 20 Mar 2025 20:16:16 GMT
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I came across this dark chocolate blackberry cupcake idea last year when my farmers market trips left me swimming in fresh blackberries. When rich dark chocolate meets tangy blackberries, magic happens - you'll get treats that look and taste like they cost big bucks at some fancy shop. They've become my secret weapon when I need to wow folks without sweating all day in the kitchen.

My next-door neighbor dropped by while these were cooling off, and just the smell made her stay for a coffee break. One bite in, she begged me for the instructions, claiming they were the most unusual cupcakes she'd ever tried. It's funny how the simplest things often leave the biggest mark on people.

Basic Components

  • Dark cocoa powder - What gives that deep, strong chocolate kick
  • Fresh blackberries - Their sourness balances the sweetness just right
  • Brown sugar - Brings extra moisture and richness regular sugar can't match
  • Hot coffee - The hidden helper that boosts chocolate flavor without tasting coffee-like
  • Buttermilk - Makes everything soft and adds a slight tang that works with the berries
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Baking Process

Berry Handling
When mashing blackberries for the cake mix, I crush them lightly with a fork, keeping some chunks for bursts of berry goodness throughout. For the topping, I blend them completely and push out the seeds through a fine strainer to get the smoothest feel and brightest color. My first try, I skipped straining and found those tiny seeds annoying in what should be silky frosting. Now I always take that extra minute to strain - it really shows in the final look.
Food Temperature
Using room-temp eggs and buttermilk makes your mix blend better and rise more evenly. I pull these out about half an hour before starting. The hot coffee or water is super important - it wakes up the cocoa powder, making the chocolate taste stronger and better. I make fresh coffee right before mixing or heat water until it's almost boiling. This temperature difference actually helps your cupcakes turn out better.
Blending Approach
When putting wet and dry stuff together, I mix just until they join up - too much stirring can make cupcakes tough instead of tender. Adding hot coffee last might seem weird, but it thins the mix in a way that bakes perfectly. I pour slowly while stirring so the heat doesn't cook the eggs. Your mix will look thinner than most cupcake batters - that's totally fine and makes them super moist.
Careful Baking
Filling paper cups about 3/4 full lets them grow without spilling over. These cakes don't puff up as much as others, making a flatter top that's great for adding frosting. I start checking if they're done at 18 minutes - stick a toothpick in the middle and it should come out with a few damp crumbs but no wet stuff. Cooling them in the pan for about 10 minutes before moving to a rack keeps them from falling apart while warm.
Topping Texture
The berry mush adds both taste and wetness to the frosting, so I put in heavy cream bit by bit, using just enough for smooth, pipe-able topping. Your butter must be properly softened for the best texture - I leave mine out at least an hour before making frosting. Whipping butter alone first until fluffy before adding other things makes the lightest result. The natural color from blackberries makes a gorgeous purple-pink shade without fake coloring.
Final Touches
For a fancy look, I use a piping bag with big star tip to top the cupcakes, though spreading with a knife works great too. Putting a fresh blackberry on top not only shows what's inside but looks pretty. Sometimes I add a tiny mint leaf or light dusting of cocoa for extra eye appeal. The contrast between purple frosting and dark chocolate cake makes them really stand out.

My teenage kid, who usually goes for store-bought snacks, called these "totally Instagram-worthy" and asked if I'd make them for her school fundraiser. When a teenager actually wants your homemade stuff instead of factory-made junk, you know you've hit on something good.

Tasty Companions

Enjoy these decadent cupcakes with a cold glass of milk for a classic combo. At get-togethers, they go great with coffee or tea. For a fancier dessert setup, serve them with extra fresh berries or a scoop of vanilla ice cream. My hubby likes having his with a glass of red wine at night - the berry notes in both really work well together.

Mix It Up

Swap in raspberries or mix different berries instead of just blackberries. Throw in a teaspoon of espresso powder to make the chocolate taste even richer. For a grown-up twist, splash some blackberry liqueur into the frosting. Last fall, I tried adding cinnamon to the chocolate mix, and it brought this lovely warmth that really played well with the berries.

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I've brought these dark chocolate blackberry cupcakes to everything from family dessert nights to fancy dinner parties, and they always get rave reviews. There's just something special about how the strong chocolate and bright berries work together in both the cake and topping. My little boy, who normally grabs anything covered in sprinkles, now asks for these "purple cupcakes" on his birthday. It's funny how the recipes that stick with us often combine unexpected flavors to make something that feels both fancy and familiar, special yet comforting.

Frequently Asked Questions

→ Can I use frozen blackberries instead of fresh ones?
Definitely! Let frozen berries thaw fully and get rid of extra liquid before mashing. For the frosting, since thawed berries hold more liquid, you might need less cream to get the right texture.
→ Why does the cupcake batter need hot coffee?
The coffee deepens the cocoa flavor without making the cupcakes taste like coffee. It also helps the cocoa bloom to bring out its richness. Prefer not to use coffee? Hot water works fine but won't boost the chocolate as much.
→ Is it okay to make these cupcakes in advance?
You can! Store unfrosted cupcakes in a sealed container at room temperature for 2 days or freeze for up to 3 months. Store the frosting in the fridge for a week, and frost them on the day you'll serve.
→ How do I make seedless blackberry purée for the frosting?
Purée fresh or thawed berries in a blender until smooth. Press through a fine sieve to remove seeds, making sure to squeeze out all the juice. You'll need about 1 cup of berries to make 1/4 cup purée.
→ Can I replace buttermilk with something else?
Sure! Mix 1/2 tablespoon of vinegar or lemon juice into 1/2 cup milk and let it sit for a few minutes until thickened. Thin plain yogurt with a little milk will also work just as well.

Chocolate Blackberry Cupcakes

Moist chocolate cupcakes with mashed blackberries, topped with smooth berry frosting. A perfect mix of cocoa richness and fresh berry sweetness.

Prep Time
25 Minutes
Cook Time
22 Minutes
Total Time
47 Minutes

Category: Sweet Stuff

Difficulty: Intermediate

Cuisine: American

Yield: 12 Servings (12 cupcakes)

Dietary: Vegetarian

Ingredients

→ Cupcake Mixture

01 ½ cup hot coffee or hot water
02 ¾ cup brown sugar
03 1 teaspoon baking soda
04 ½ teaspoon salt
05 ½ cup buttermilk
06 ½ cup unsalted butter, melted
07 ½ cup fresh blackberries, mashed
08 1 cup all-purpose flour
09 2 large eggs
10 ½ cup unsweetened cocoa powder
11 1 teaspoon vanilla extract

→ Frosting with Blackberries

12 ¼ cup blackberry purée, strained to remove the seeds
13 2 cups powdered sugar
14 1-2 tablespoons heavy cream (to adjust thickness)
15 ½ cup unsalted butter, softened
16 1 teaspoon vanilla extract

→ Toppings (Optional)

17 Chocolate shavings
18 Fresh blackberries
19 Edible flowers

Instructions

Step 01

Set your oven to 350°F (175°C). Pop paper liners into a regular 12-cup muffin pan.

Step 02

Grab a medium mixing bowl and combine cocoa powder, flour, salt, and baking soda by whisking them. Put it to the side.

Step 03

In a bigger bowl, blend melted butter with brown sugar until it's smooth. Add the eggs one at a time, mixing well in between. Stir in the vanilla, mashed blackberries, and buttermilk till everything's together.

Step 04

Carefully mix the dry stuff into the wet bowl. Don’t overdo it—just stir until they’re barely combined.

Step 05

Slowly drizzle in the hot coffee or water, giving it a gentle mix till smooth. Don’t worry about the batter being runny!

Step 06

Spoon the batter into the liners, filling each about three-quarters of the way.

Step 07

Bake for roughly 18 to 22 minutes. Check if they’re done using a toothpick—if it comes out clean or just a touch crumbly, they’re ready!

Step 08

Let the cupcakes sit in the pan for 5 minutes after baking. Then transfer them to a cooling rack so they’re completely cool before frosting.

Step 09

While cupcakes cool, blend fresh blackberries till smooth. Push the puree through a fine sieve to remove seeds, pressing with a spoon to get all the liquid.

Step 10

Using a mixer, beat softened butter until it’s creamy, about 2 minutes. Slowly add powdered sugar on low speed. Then mix in the strained blackberry juice and vanilla. Adjust thickness with heavy cream if needed. Beat for 3-4 minutes till fluffy.

Step 11

Make sure your cupcakes are totally cool. Spread or pipe the frosting on top.

Step 12

If you want to fancy them up, add a blackberry, some chocolate curls, or edible flowers before serving.

Notes

  1. Hot coffee deepens the chocolate flavor without making it taste like coffee.
  2. If you love blackberries, toss in some fresh ones into the batter before putting it in the oven.
  3. Keep frosted cupcakes in the fridge for up to three days in an airtight container. Let them sit out to reach room temperature before enjoying.
  4. The acidity in blackberries makes the cupcakes amazingly moist and keeps them fresh for longer.

Tools You'll Need

  • Muffin pan for 12 cupcakes
  • Paper liners
  • Large and medium bowls
  • Hand or stand mixer
  • Whisk
  • Flexible spatula
  • Measuring cups and spoons
  • Cooling rack
  • Food processor or blender
  • Fine sieve
  • Piping bag and nozzle (optional)

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Uses wheat (flour)
  • Contains dairy (butter, buttermilk, heavy cream)
  • Includes eggs

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 310
  • Total Fat: 16 g
  • Total Carbohydrate: 42 g
  • Protein: 4 g