Vanilla Bean Sandwich Cookies With Strawberry Buttercream Recipe

I just made vanilla bean sandwich cookies stuffed with Strawberry Buttercream and browned butter blondie crumbs and they’re the kind of summer snack that makes you cancel plans.

I am obsessed with these Vanilla Bean Sandwich Cookies with Strawberry Buttercream. I love how the seeds from a vanilla bean show up like tiny promises in every bite, and that strawberry buttercream slams in with real sweet-tart strawberry flavor.

I can’t stop dunking them in milk or stealing one between plates. They’re like shortcake gestured into a sandwich cookie, but lighter and flakier.

I read too many Vanilla Sandwich Cookie Recipes and still this one wins my snack drawer. But mostly it’s the texture contrast, tender cookie, creamy filling, that gets me every single time.

Pure junkie joy, really.

Ingredients

• Browned butter: nutty depth and rich mouthfeel, makes cookies taste grown-up.
• Granulated sugar: classic crunch and sweetness, gives edges a little snap.
• Brown sugar: moist chew and caramel notes, keeps centers soft.
• Egg: binds everything together and adds tender structure.
• Vanilla seeds: tiny flecks and true vanilla perfume, basically bakery vibes.
• All-purpose flour: the cookie backbone, provides chew and structure.
• Cornstarch: gives tender, melt-in-your-mouth texture, it’s the softener.
• Baking powder: gentle lift, keeps cookies from being flat.
• Baking soda: helps spread and browns the edges just right.
• Fine sea salt: balances sweetness, makes flavors pop quietly.
• Optional sanding sugar: adds sparkly crunch and cute cookie sparkle.
• Butter for buttercream: creamy base, makes frosting lush and spreadable.
• Confectioners sugar: silky sweetness, gives frosting that smooth pipeable body.
• Freeze-dried strawberry powder: bright fruit punch without watering down frosting.
• Heavy cream or milk: thins frosting to the right silky consistency.
• Vanilla extract for buttercream: rounds flavors, makes it taste familiar and warm.
• Pinch of salt in buttercream: cuts sweetness, keeps it from feeling cloying.

Ingredient Quantities

• 1 cup (226 g) unsalted butter, to be browned and cooled (about 2 sticks)
• 3/4 cup (150 g) granulated sugar
• 1/4 cup (50 g) packed light brown sugar
• 1 large egg, room temperature
• seeds from 1 vanilla bean, scraped (or 1 tsp pure vanilla extract)
• 2 cups (250 g) all purpose flour
• 2 tablespoons cornstarch
• 1/2 teaspoon baking powder
• 1/4 teaspoon baking soda
• 1/2 teaspoon fine sea salt
• Optional: extra granulated or sanding sugar for rolling before baking
• For the strawberry buttercream
• 1/2 cup (113 g) unsalted butter, softened
• 3 cups (360 g) confectioners powder sugar
• 1/2 cup freeze dried strawberries, blitzed to a powder (or 1/2 cup fresh strawberries cooked down and reduced)
• 1 to 2 tablespoons heavy cream or milk, as needed for consistency
• 1 teaspoon pure vanilla extract
• Pinch of salt

How to Make this

1. Brown the butter: melt 1 cup (226 g) unsalted butter in a light colored skillet over medium heat, swirl often until it foams then turns nutty brown and smells toasty, about 6 to 8 minutes; remove from heat and let cool to warm room temperature.

2. Mix sugars and egg: in a bowl whisk 3/4 cup (150 g) granulated sugar and 1/4 cup (50 g) light brown sugar with the cooled browned butter until combined, then whisk in 1 large room temperature egg and the seeds from 1 vanilla bean or 1 tsp vanilla extract.

3. Combine dry ingredients: whisk together 2 cups (250 g) all purpose flour, 2 tablespoons cornstarch, 1/2 teaspoon baking powder, 1/4 teaspoon baking soda and 1/2 teaspoon fine sea salt in a separate bowl.

4. Make the dough: fold the dry mix into the wet until just combined, dont overmix. Chill the dough at least 30 minutes to 1 hour until firm enough to roll; chilling helps keep the cookies tender.

5. Shape and sugar: preheat oven to 350°F (175°C). Roll chilled dough into 1 inch balls and optionally roll in extra granulated or sanding sugar for sparkle, place 2 inches apart on a lined baking sheet and gently flatten slightly with your palm or the bottom of a glass.

6. Bake: bake for 10 to 12 minutes or until edges are just set and tops look slightly matte; they will be soft but will set as they cool. Cool on the sheet 5 minutes then transfer to a wire rack to cool completely.

7. Make strawberry powder or reduce fresh: if using freeze dried strawberries, blitz 1/2 cup to a fine powder in a food processor. If using fresh, cook 1/2 cup chopped strawberries over medium heat until reduced and thick, then cool and strain out excess liquid so buttercream won’t be too runny.

8. Make the strawberry buttercream: beat 1/2 cup (113 g) softened unsalted butter until creamy, add 3 cups (360 g) confectioners sugar and the 1/2 cup strawberry powder or reduced strawberry, then add 1 teaspoon vanilla and a pinch of salt. Add 1 to 2 tablespoons heavy cream or milk as needed to reach a spreadable consistency, scrape bowl and beat until smooth and fluffy.

9. Assemble cookies: pipe or spoon about 1 tablespoon of buttercream onto the flat side of one cookie, sandwich with another cookie pressing gently to spread the filling to the edges. Keep assembled cookies refrigerated if using fresh strawberry reduction and bring to room temp before serving.

10. Tips: for best flavor use the browned butter cooled but not solid, if buttercream is grainy from freeze dried fruit pulse finer, and store cookies in an airtight container up to 3 days at room temp or longer in fridge.

Equipment Needed

1. Light colored skillet for browning the butter
2. Mixing bowls (one for wet ingredients, one for dry)
3. Whisk and rubber spatula (for mixing and folding)
4. Measuring cups, spoons and a kitchen scale (for accurate weights)
5. Baking sheet lined with parchment paper or a silicone mat
6. Wire cooling rack
7. Hand mixer or stand mixer (for the buttercream)
8. Food processor or blender (to powder freeze dried strawberries or blitz reductions)

FAQ

Vanilla Bean Sandwich Cookies With Strawberry Buttercream Recipe Substitutions and Variations

• Unsalted butter (browned): can swap with equal amount unsalted butter that was melted and chilled. You lose a bit of the nutty browned flavor, but texture stays the same. If you need dairy-free, use vegan stick butter, brown it carefully or add 1/4 tsp toasted nut oil for depth.
• Large egg: replace with 1/4 cup unsweetened applesauce for a softer, cakier cookie, or use 1 tablespoon ground flaxseed mixed with 3 tablespoons water (let sit 5 minutes) for a firmer, slightly denser result.
• All purpose flour: substitute with 1-to-1 gluten free baking flour blend (make sure it contains xanthan or guar). For a slightly more tender cookie, use 1 3/4 cups all purpose plus 1/4 cup cornstarch in place of the 2 cups.
• Freeze dried strawberries (for buttercream): use 1/2 cup mashed, reduced fresh strawberries (cook down until thick and let cool) or 2 tablespoons strawberry jam, but cut back powdered sugar a bit to keep the buttercream from getting too sweet or runny.

Pro Tips

1) Don’t rush the browned butter cooling. If it’s too hot when you add the egg it’ll scramble part of it and make the dough grainy. Let it cool to warm but still pourable, and swirl a little back into the mixing bowl to keep flavor consistent.

2) Chill the dough longer than you think. A firmer dough spreads less and gives you chewier centers with crisper edges. If you’re short on time freeze for 15 minutes instead of the 30 min fridge trick.

3) If using freeze dried strawberries, powder them completely. Any little bits can make the buttercream gritty. Pulse in short bursts, then sift if you want ultra smooth. For fresh reductions, remove as much excess liquid as possible or the filling will slide.

4) Watch bake time, not color. These cookies look a little underdone when done. Pull them when edges are set and tops look matte, then cool on the sheet so they finish firming up. Overbake and they’ll lose that tender center everyone wants.