#### **Step 1: Prepare the Dough**
Preheat oven to **350°F (175°C)** and line a **baking sheet with parchment paper**.
In a large mixing bowl, cream together **butter, brown sugar, and granulated sugar** until light and fluffy.
Add **egg and vanilla extract**, mixing until well combined.
#### **Step 2: Mix the Dry Ingredients**
In a separate bowl, whisk together **flour, baking soda, baking powder, salt, and cinnamon**.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Gently fold in the **chopped Pop-Tart pieces**.
#### **Step 3: Bake the Cookies**
Scoop dough onto the baking sheet, spacing cookies about **2 inches apart**.
Bake for **10-12 minutes**, until the edges are golden brown but the centers are still soft.
Let cookies cool on the baking sheet for **5 minutes**, then transfer to a wire rack.
#### **Step 4: Make the Glaze & Drizzle**
In a small bowl, whisk together **powdered sugar, cinnamon, milk, and vanilla extract** until smooth.
Drizzle the glaze over cooled cookies and let set before serving.
