Gather and weigh your ingredients
Preheat oven to 180c [355F] Lightly grease or line the muffin tray with paper cases or silicone muffin cases [Note 3]
In a large bowl, beat the eggs, then beat in the sugar and oil. Add the cocoa, vanilla and courgette and stir well.
In another large bowl, sift together the dry ingredients: flour, bicarb, baking powder and spices.
Fold the dry ingredients into the wet mix. Mix through until just incorporated- do not over mix!
Put the mix into a piping bag and fit a small to medium nozzle. OR using two small teaspoons, to fill the cases 2/3. Wipe off any spilled mix before putting the tin in the oven.
Pipe the mixture into the cases- filling 2/3 of the way.
Bake for 12-15 minutes or until a knife inserted comes out clean
Remove from the oven and let rest for 10 minutes.
Remove the muffins from the tin and cool on a wire rack.
Store in an air-tight container for up to 3 days. Freeze for up to one month