These courgette chocolate muffins are the kind of bake that disappears fast. They’re rich, fudgy, and not too sweet, with a soft crumb that stays moist for days. The courgette melts into the batter, adding tenderness without shouting for attention.

You get a proper chocolate fix with a little hidden veg bonus. Whether you’re baking for kids, a coffee break, or meal prep, this is a dependable, crowd-pleasing recipe.

What Makes This Special

These muffins taste like a cross between a brownie and a classic chocolate cake, but they’re lighter and stay fresh longer. The courgette adds moisture without making the muffins wet or heavy, especially if you lightly squeeze it first.

You don’t need a mixer, just a couple of bowls and a whisk. They freeze brilliantly, so you can stash a quick snack for later. Plus, the recipe is flexible: swap in different sugars, add nuts, or go dairy-free with simple tweaks.

Ingredients

• 1 1/2 cups (200 g) plain/all-purpose flour
• 1/2 cup (45 g) cocoa powder (unsweetened, good quality)
• 1 teaspoon baking powder
• 1/2 teaspoon bicarbonate of soda (baking soda)
• 1/2 teaspoon fine salt
• 1 teaspoon instant espresso powder (optional, boosts chocolate flavour)
• 2 large eggs, room temperature
• 3/4 cup (150 g) caster or granulated sugar
• 1/4 cup (50 g) light brown sugar (adds moisture and depth)
• 1/2 cup (120 ml) neutral oil (sunflower, vegetable, or light olive)
• 1 teaspoon vanilla extract
• 1 cup (240 ml) buttermilk (or 1 cup milk + 1 tablespoon lemon juice, rested 5 minutes)
• 1 1/2 cups (180 g) grated courgette (zucchini), lightly packed
• 3/4 cup (130 g) dark chocolate chips or chunks (plus extra for topping)

Instructions

1. Prep the courgette. Wash and trim the ends.Grate on the coarse side of a box grater. Place in a clean tea towel and lightly squeeze to remove excess water. Don’t wring it dry—just take off the drip.
2. Heat the oven. Preheat to 190°C/375°F.Line a 12-hole muffin tin with paper cases or grease well.
3. Mix dry ingredients. In a large bowl, whisk flour, cocoa, baking powder, bicarb, salt, and espresso powder until evenly combined.
4. Mix wet ingredients. In a separate bowl, whisk eggs, caster sugar, brown sugar, oil, and vanilla until smooth and slightly thickened.
5. Add buttermilk. Whisk in the buttermilk until the mixture looks silky and unified.
6. Combine. Pour the wet mix into the dry. Stir with a spatula until just combined. The batter should be thick with a few streaks of flour remaining.
7. Fold in the courgette and chocolate. Add the grated courgette and chocolate chips.Fold gently until evenly distributed. Do not overmix.
8. Portion the batter. Divide evenly between the muffin cups, filling each about 3/4 full. Sprinkle a few extra chocolate chips on top for a glossy finish.
9. Bake. Bake for 16–20 minutes, or until the tops spring back and a skewer comes out with a few moist crumbs (not wet batter).
10. Cool. Let the muffins rest in the tin for 5 minutes, then transfer to a wire rack to cool completely.This helps set the crumb and keeps the liners from sticking.

Storage Instructions

• Room temperature: Store in an airtight container for 2–3 days. Place a paper towel underneath and on top to absorb moisture.
• Fridge: Keeps up to 5 days. Bring to room temp or warm briefly before serving for best texture.
• Freezer: Wrap individually and freeze up to 3 months.Thaw at room temp or microwave for 20–30 seconds.

Health Benefits

Courgette brings fibre, potassium, and vitamin C, adding nutrients without a heavy calorie load. Using oil instead of butter gives a tender crumb and can reduce saturated fat. Cocoa powder provides flavanols, and dark chocolate chips add a touch of antioxidants too.

You can gently lower the sugar and still get great results, especially with the moisture from the courgette. Portion-controlled muffins also make it easier to enjoy a treat without going overboard.

Pitfalls to Watch Out For

• Too much moisture: If you don’t lightly squeeze the courgette, the muffins can turn dense or gummy.
• Overmixing: Stirring too much after adding flour develops gluten and makes tough muffins.
• Overbaking: A dry muffin won’t taste as chocolatey. Check early and look for moist crumbs on the skewer.
• Skimping on salt: A little salt sharpens chocolate flavour.Don’t skip it.
• Old leavening: Expired baking powder or soda leads to flat, heavy muffins. Check dates.

Recipe Variations

• Dairy-free: Use plant milk with 1 tablespoon lemon juice or vinegar to mimic buttermilk. Swap chocolate chips for dairy-free versions.
• Wholegrain boost: Replace 1/2 cup of flour with wholemeal flour.Add an extra tablespoon of buttermilk if the batter feels stiff.
• Nutty crunch: Fold in 1/2 cup chopped walnuts, pecans, or hazelnuts for texture.
• Double chocolate: Add 2 tablespoons melted dark chocolate to the wet mix for an even richer crumb.
• Orange twist: Add 1 tablespoon orange zest and swap vanilla for 1/2 teaspoon orange extract.
• Refined sugar–lighter: Use 1/2 cup coconut sugar plus 1/4 cup caster sugar. Flavour stays round and caramelly.
• Mini muffins: Bake in a mini tin for 10–12 minutes. Great for lunchboxes.

FAQ

Do the muffins taste like courgette?

No.

The courgette is there for moisture and tenderness. Its flavour is very mild and disappears under the chocolate and vanilla.

Can I use frozen courgette?

Yes, but thaw it fully and squeeze out the excess liquid well. Frozen courgette holds more water, so be thorough or the texture will suffer.

What can I use instead of buttermilk?

Mix regular milk with 1 tablespoon of lemon juice or vinegar and let it sit for 5 minutes.

Unsweetened plant milk works too with the same method.

Can I reduce the sugar?

You can cut the sugar by about 20% without major changes. Keep some brown sugar for moisture and flavour balance.

Why did my muffins sink?

Common causes include underbaking, too much liquid from unsqueezed courgette, or old baking powder/soda. Weigh ingredients where possible for accuracy.

How do I make them gluten-free?

Use a 1:1 gluten-free baking flour blend that includes xanthan gum.

Let the batter sit for 5–10 minutes before baking to hydrate the flour.

Can I swap cocoa powder for melted chocolate?

Not directly. Cocoa is dry and concentrated. If you want extra richness, keep the cocoa and add a little melted dark chocolate to the wet mix.

How do I get taller muffin tops?

Fill cups 3/4 full, start with a hot oven, and don’t let the batter sit too long.

You can bake at 200°C/400°F for the first 5 minutes, then drop to 185°C/365°F to encourage lift.

Are these good for lunchboxes?

Yes. They hold up well, don’t crumble easily, and taste great at room temp. Skip the extra chocolate chips on top if your school has strict rules.

Final Thoughts

Courgette chocolate muffins are the kind of bake that fits into real life: simple to make, easy to store, and reliably delicious.

They feel like a treat but don’t weigh you down, and they welcome tweaks based on what you have. Once you try them, you’ll see why they’re a favourite for busy weeks and relaxed weekends alike. Keep this recipe handy—you’ll come back to it often.