Marble cookies with pudding filling

Ingredients:

• 1 and 3/4 cups premium flour
• 3/4 cup sugar + extra for sprinkling
• 1 teaspoon baking powder
• 0.5 tsp salt
• 6 tablespoons unsalted butter, melted
• 2 large eggs, lightly beaten
• 1/4 cup cocoa powder
• 1 tbsp. milk
• 1/3 cup prepared vanilla pudding

Preparation:

1. In a medium bowl, whisk together the flour, sugar, baking powder, and salt. Stir in the melted butter and eggs. Transfer one-third of the batter to a small bowl, add the cocoa powder and milk, and stir with a wooden spoon until smooth. Gently fold the chocolate batter back into the white batter to create a marbled pattern.
2. Position oven racks in the upper and lower thirds of the oven and preheat to 350°F (175°C). Line 2 baking sheets with parchment paper. Drop 1 tablespoon of the batter onto the prepared baking sheets, spacing them about 1 inch (2.5 cm) apart; sprinkle generously with sugar.
3. Bake until the cookies are slightly puffed, 6-7 minutes. Remove from the oven and make an indentation in the center of each cookie with the back of a teaspoon. Spoon 1/2 teaspoon of pudding mixture into each indentation, then return the cookies to the oven, rotating the baking sheets and turning them over.
4. Bake until golden brown and the filling is set, about 6 more minutes. Let cool on the baking sheets for 5 minutes, then transfer to wire racks to cool completely.