Creating Strawberry Cream Cheese Muffins is straightforward if you follow these simple steps:

1. Preheat your oven: Preheat your oven to 350°F (175°C). Line a muffin tin with paper liners or grease it well.
2. Mix Dry Ingredients: In a large bowl, combine the flour, baking soda, baking powder, and salt. Set aside.
3. Cream Butter and Sugar: In another bowl, beat the softened butter and granulated sugar together until light and fluffy.
4. Add Egg and Vanilla: Mix in the egg and vanilla extract, beating until well combined.
5. Incorporate Sour Cream: Add the sour cream to the butter mixture, mixing until smooth.
6. Combine Wet and Dry Ingredients: Gradually add the dry ingredients to the wet ingredients, stirring until just combined. Do not overmix.
7. Fold in Strawberries: Gently fold in the chopped strawberries, ensuring they are evenly distributed throughout the batter.
8. Prepare Cream Cheese Filling: In a separate bowl, mix the softened cream cheese and powdered sugar until creamy and smooth.
9. Fill Muffin Tins: Spoon a small amount of batter into each muffin cup, followed by a dollop of the cream cheese filling. Top with more batter until each cup is about ¾ full.
10. Bake: Place the muffin tin in the preheated oven and bake for 20-25 minutes or until a toothpick inserted into the center comes out clean.
11. Cool: Remove the muffins from the oven and let them cool in the pan for 10 minutes before transferring them to a wire rack to cool completely.

By following these steps, you will create incredibly delicious Strawberry Cream Cheese Muffins that are sure to impress!