Ingredients

1 3/4 c. all-purpose flour

1 tsp. baking soda

1/2 tsp. salt

1 1/4 stick unsalted butter

1 1/2 c. plus 2 teaspoons sugar

1 large egg

2 tsp. pure vanilla extract

1 vanilla bean

6 oz. fresh raspberries

7 1/2 oz. best-quality white chocolate

c. heavy cream

Preparation

Step 1Preheat oven to 350 degrees. Whisk together flour, baking soda, and salt; set aside.Step 2Mix butter and 1 1/2 cups sugar with an electric mixer on medium-high speed until pale and fluffy, 2 to 3 minutes. Add egg, extract, and vanilla seeds; mix until smooth. Reduce speed to low. Gradually mix in flour mixture.Step 3Scoop batter using a 1-inch ice cream scoop; space 2 inches apart on baking sheets lined with parchment paper.Step 4Bake cookies 4 minutes. Remove from oven; gently tap baking sheets on counter to flatten cookies. Return to oven, switching positions of sheets; bake until cookies are just set, 4 to 6 minutes more. Let cool on parchment on wire racks.Step 5Puree raspberries and remaining 2 teaspoons sugar in a food processor. Pour mixture through a fine sieve into a small bowl, pressing to extract juice; discard seeds. Set mixture aside.Step 6Melt white chocolate in a heatproof bowl set over a pan of simmering water. Remove from heat; whisk in cream in a slow stream. Whisk in reserved raspberry mixture. Refrigerate 30 minutes.Step 7Spread 1 heaping teaspoon raspberry cream on the undersides of half the cookies. Sandwich with remaining cookies. Cookies can be stored at room temperature in an airtight container up to 2 days.