Creating delicious Blueberry Muffin Cookies is simple if you follow these easy steps:

1. Preheat your Oven: Begin by preheating your oven to 350°F (175°C) and lining two baking sheets with parchment paper.

2. Mix Dry Ingredients: In a medium bowl, whisk together the flour, baking soda, baking powder, salt, and ground cinnamon until well combined.

3. Cream Butter and Sugar: In a large bowl, using an electric mixer, beat the softened butter and granulated sugar together until light and fluffy, about 2-3 minutes.

4. Add Eggs and Vanilla: Add the eggs one at a time, mixing well after each addition. Then, add the vanilla extract and sour cream, mixing until just incorporated.

5. Combine Mixtures: Gradually add the dry ingredients to the wet ingredients, stirring gently until no flour streaks remain. Be careful not to overmix.

6. Fold in Blueberries: Gently fold in the fresh blueberries, ensuring they are evenly distributed throughout the cookie dough.

7. Scoop the Dough: Using a cookie scoop or tablespoon, drop rounded balls of dough onto the prepared baking sheets, spacing them about 2 inches apart.

8. Bake: Bake for 12–15 minutes, or until the edges are lightly golden and the centers have set.

9. Cool: Allow the cookies to rest on the baking sheets for about 5 minutes before transferring them to wire racks to cool completely.

10. Enjoy: Once cooled, enjoy your freshly baked Blueberry Muffin Cookies straight away, or store them in an airtight container.