Preheat oven to 350°F (180°C) and line a muffin tin with paper liners.
In a large bowl, whisk together the dry ingredients: rolled oats, all-purpose flour, baking powder, and a pinch of salt.
In a separate bowl, whisk the eggs, then add the honey, milk, olive oil, vanilla extract, grated orange zest, and freshly squeezed orange juice. Whisk until smooth.
Pour the wet ingredients into the dry ingredients, then gently fold together with a spatula until just combined. Be careful not to overmix.
Finally, fold in the chopped dark chocolate chips, ensuring they are evenly distributed throughout the batter.
Fill the muffin cups about three-quarters full with the batter.
Bake the muffins for 20-25 minutes, or until golden brown and a toothpick inserted into the center comes out clean.
Let the muffins cool in the tin for 5 minutes, then transfer them to a wire rack to cool completely.
To provide the best experiences, we and our partners use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us and our partners to process personal data such as browsing behavior or unique IDs on this site and show (non-) personalized ads. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Click below to consent to the above or make granular choices. Your choices will be applied to this site only. You can change your settings at any time, including withdrawing your consent, by using the toggles on the Cookie Policy, or by clicking on the manage consent button at the bottom of the screen.