1. Preheat the Oven: Start by preheating your oven to 350°F (175°C). This ensures that your muffins bake evenly.
2. Prepare the Muffin Tin: Line a muffin tin with paper liners or lightly grease it with coconut oil to prevent sticking.
3. Mix the Dry Ingredients: In a large mixing bowl, whisk together the oat flour, baking powder, baking soda, salt, and sugar (or sugar substitute) until well combined.
4. Combine the Wet Ingredients: In another bowl, mix the melted coconut oil, Greek yogurt, eggs, and vanilla extract. Stir until the mixture is smooth and well combined.
5. Combine Wet and Dry Mixtures: Pour the wet ingredients into the dry ingredients. Gently fold them together with a rubber spatula until just combined. Be careful not to overmix; a few lumps are perfectly fine.
6. Add Chocolate (Optional): If you’re adding chocolate, fold in the chopped pieces at this stage for a delightful surprise in every bite.
7. Fill the Muffin Tin: Spoon the batter into the prepared muffin tin, filling each cup about 2/3 of the way full to allow for rising.
8. Bake: Place the muffin tin in the preheated oven and bake for 18-20 minutes, or until a toothpick inserted into the center comes out clean.
9. Cool: Remove the muffins from the oven and allow them to cool in the tin for a few minutes before transferring them to a wire rack to cool completely.