1️⃣ Make the Cookie Dough:

• In a bowl, whisk together flour, baking powder, and salt.
• In another bowl, beat the butter and sugar until light and fluffy (about 2 minutes).
• Add the egg and vanilla extract, mixing until combined.
• Gradually add the dry ingredients, beating until a soft dough forms.

2️⃣ Roll & Fill:

• Roll out the dough on a floured surface into a rectangle (~¼ inch thick).
• Brush the melted butter over the dough.
• Sprinkle the brown sugar and cinnamon evenly across the surface.

3️⃣ Roll & Chill:

• Roll the dough tightly into a log, like a cinnamon roll.
• Wrap in plastic wrap and refrigerate for at least 30 minutes to firm up.

4️⃣ Slice & Bake:

• Preheat oven to 350°F (175°C) and line a baking sheet with parchment paper.
• Slice the chilled dough into ¼-inch thick rounds.
• Place on the baking sheet, spacing them about 2 inches apart.
• Bake for 10-12 minutes, or until the edges are lightly golden.
• Let cool completely on a wire rack.

5️⃣ Glaze & Serve:

• Whisk together powdered sugar, milk, and vanilla to make the glaze.
• Drizzle over the cooled cookies.