Creating these amazing Cheesecake Cookies with Blueberry Jam is straightforward if you follow these simple steps:

1. Preheat the oven to 350°F (175°C) and line a baking sheet with parchment paper.
2. Mix Dry Ingredients: In a bowl, whisk together the flour, baking powder, baking soda, and salt.
3. Cream Butter and Sugar: In a large bowl, beat the softened butter and granulated sugar until light and fluffy.
4. Add Egg and Vanilla: Mix in the egg and vanilla extract until well combined.
5. Combine Mixtures: Gradually add the dry ingredient mixture into the butter mixture, mixing until fully incorporated.
6. Make Cream Cheese Filling: In another bowl, blend the softened cream cheese and powdered sugar until smooth.
7. Form Cookies: Scoop out a tablespoon of cookie dough, flatten it slightly, and place about a teaspoon of cream cheese filling in the center. Fold the dough over to cover the filling, rolling it into a ball, and place on the baking sheet.
8. Add Jam: Using a small spoon, create a small indent in the center of each cookie and fill with blueberry jam.
9. Bake: Place your baking sheet in the preheated oven and bake for 10-12 minutes, or until the edges are golden brown but the centers are still soft.
10. Cool: Remove from the oven and let the cookies cool on the baking sheet for 5 minutes before transferring to a cooling rack to cool completely.

By following these easy steps, you will have a batch of mouthwatering Cheesecake Cookies with Blueberry Jam ready to enjoy!