Ingredients:

For the Muffin Batter:

• 4 eggs: The eggs provide structure and give the muffins a light, airy texture. Be sure to use them at room temperature for the best results.
• 150 g white sugar: The sugar not only sweetens the muffins but also helps to create a tender crumb. You can adjust the sugar slightly to your taste.
• 60 ml cold milk: Milk adds moisture to the batter, making the muffins soft and moist. Cold milk helps to keep the butter from melting too quickly.
• 60 ml sunflower oil: This oil is neutral in flavor and contributes to the moistness of the muffins. It helps to balance the richness from the butter.
• 100 g cold melted butter: Butter adds a rich, creamy flavor to the muffins. Melting it and allowing it to cool slightly before adding it to the batter ensures it blends smoothly without curdling the eggs.
• 125 g unsweetened plain yogurt: Yogurt adds moisture and a subtle tangy flavor, which complements the sweetness of the muffins and enhances the texture.
• 8 g vanilla sugar: Vanilla sugar infuses the batter with a warm, aromatic vanilla flavor. If you don’t have vanilla sugar, you can substitute it with 1 teaspoon of vanilla extract.
• 300 g all-purpose flour: Flour forms the base of the muffins, giving them structure. Make sure to measure it correctly by spooning it into the measuring cup and leveling it off with a knife.
• Pinch of salt: Salt enhances the flavors and balances the sweetness, making the muffins more flavorful.
• 16 g baking powder: Baking powder is essential for leavening, helping the muffins rise and become fluffy.
• Zest of one lemon or orange: The zest adds a citrusy brightness that cuts through the richness, making the muffins even more irresistible.

Instructions:

1. Preheat the Oven: Preheat your oven to 180°C (350°F) and line a muffin tin with paper liners or grease it lightly with butter or oil.
2. Prepare the Wet Ingredients: In a large mixing bowl, beat the eggs and sugar together until the mixture is light and fluffy. This step is crucial as it helps to incorporate air into the batter, making the muffins light.
3. Add the Fats and Flavorings: Gradually mix in the cold milk, sunflower oil, and melted butter. Add the vanilla sugar and yogurt, and continue to mix until everything is well combined. The batter should be smooth and creamy at this stage.
4. Incorporate the Dry Ingredients: In a separate bowl, sift together the flour, salt, and baking powder. Sifting helps to remove any lumps and ensures that the dry ingredients are evenly distributed. Gently fold the dry ingredients into the wet mixture, being careful not to overmix. Overmixing can result in dense muffins.
5. Add the Citrus Zest: Finally, fold in the lemon or orange zest. The zest should be finely grated to ensure it blends well into the batter, providing a fresh, zesty flavor in every bite.
6. Fill the Muffin Tin: Spoon the batter into the prepared muffin tin, filling each cup about two-thirds full. This allows room for the muffins to rise without spilling over.
7. Bake the Muffins: Bake in the preheated oven for 18-22 minutes, or until a toothpick inserted into the center of a muffin comes out clean. The tops should be golden brown, and the muffins should spring back when lightly pressed.
8. Cool and Enjoy: Allow the muffins to cool in the tin for a few minutes before transferring them to a wire rack to cool completely. Enjoy them warm or at room temperature, with a pat of butter or a dollop of jam if you like!

Conclusion:

These muffins are incredibly versatile and can be customized to your liking. Add in some chocolate chips, berries, or nuts for extra texture and flavor. They also freeze well, making them a great option for meal prep. Just pop them in the freezer and reheat them in the microwave or oven for a quick and delicious treat anytime