Name: Double-Chocolate Sandwich Cookies
Cook time: 1 1/4 hr
Total time: 4 hr (includes chilling dough)
Yield: Makes about 3 1/2 dozen cookies
Ingredients: 2 cups all-purpose flour; 1/2 cup unsweetened Dutch-process cocoa powder; 1/2 teaspoon baking powder; 1/2 teaspoon salt; 2 sticks (1/2 pound) unsalted butter, softened; 3/4 cup sugar; 1 large egg yolk; 1 teaspoon pure vanilla extract; 1/2 cup heavy cream; 1 1/2 tablespoons light corn syrup; 3/4 pound fine-quality white chocolate, melted; 2 tablespoons unsalted butter, softened; 2 teaspoons pure vanilla extract; Equipment: a 1 3/4-inch fluted round cookie cutter; Garnish: decorative sugar (optional)

Image may contain Confectionery Food Sweets Fruit Plant and Raspberry

Photo by Romulo Yanes

Whether you dunk them in milk, pry them apart, or devour them whole, sandwich cookies are irresistible. These, with their crisp chocolate wafers and ganache filling made from fine-quality white chocolate, are so much better than that supermarket version.

Cook's notes:

· Dough can be chilled up to 2 days. · Ganache can be made 1 day ahead and chilled, its surface covered with parchment. Bring to room temperature, then beat with mixer before using. · Sandwiched cookies keep, chilled, 4 days.

Recipe notes

See Related Recipes and Cooking Tips

Our Best Sandwich Cookie Recipes
A cookie is great. Two cookies are even better. Put something in between them, and you've got a work of art.

Caramelized Onion Pasta

Turn humble onions into this thrifty yet luxe pasta dinner.

Chocolate Guinness Cake

A generous glug of stout gives this snackable loaf a malty depth.

Apple-Walnut Charoset

A warmly spiced Ashkenazi charoset, perfect for your Passover seder—or spooned over yogurt the next morning.

Golden Mushroom Soup With Orzo & a Pat of Butter

This is the type of soup that, at first glance, might seem a little…unexciting. But you’re underestimating the power of mushrooms, which do the heavy lifting.

Hot Honey–Glazed Salmon

This broiled hot honey salmon recipe results in sweet, spicy, glossy fish coated in a homemade hot honey glaze for an easy weeknight dinner or make-ahead lunch.

Béchamel Sauce

This classic 15-minute sauce is your secret weapon for homemade mac and cheese, chowder, lasagna, and more.

Classic French Vinaigrette

Use this simple vinaigrette to dress a plate of greens, some steamed potatoes, or anything else that strikes your fancy.

Easy Banana Bread Recipe

Our go-to banana bread recipe is moist, nutty, and incredibly easy to make.

Recipe notes

Our Best Sandwich Cookie Recipes