White Chocolate Raspberry Blondies with Vanilla Batter

Why You’ll Love This Recipe

• Dense, fudgy vanilla blondies with pockets of juicy, tart raspberries and creamy white chocolate in every bite.
• Easy one-bowl batter with basic pantry ingredients, no mixer required.
• Perfect make-ahead dessert for picnics, potlucks, baby showers, or afternoon coffee breaks.
• Beautiful bakery-style squares that look impressive but are simple enough for beginner bakers.

Grocery List

• Produce: Fresh raspberries, 1 lemon (for optional zest)
• Dairy: Unsalted butter, eggs
• Pantry: All-purpose flour, light brown sugar, granulated sugar, white chocolate chips or bars, vanilla extract, baking powder, fine sea salt

Full Ingredients

Blondie Batter

• 1/2 cup (113 g) unsalted butter, melted and slightly cooled
• 1 cup (200 g) packed light brown sugar
• 1/4 cup (50 g) granulated sugar
• 1 large egg, room temperature
• 1 large egg yolk, room temperature
• 2 tsp pure vanilla extract
• 1–2 tsp finely grated lemon zest (optional, but lovely with raspberries)
• 1 1/4 cups (160 g) all-purpose flour, spooned and leveled
• 1/2 tsp baking powder
• 1/4 tsp fine sea salt (or table salt)

Mix-Ins and Topping

• 1 1/4 cups (about 150 g) fresh raspberries, plus a few extra for topping if you like
• 1–2 tsp all-purpose flour (for tossing raspberries)
• 1 cup (170 g) white chocolate chips or chopped white chocolate, divided
• Optional: Pinch of flaky sea salt for sprinkling after baking

Step-by-Step Instructions

Step 1: Prepare your pan and preheat the oven

Preheat your oven to 350°F (175°C) with a rack in the center position. Lightly grease an 8×8-inch metal baking pan. Line it with parchment paper, leaving a bit of overhang on two sides to create a sling; this makes it much easier to lift the blondies out for clean cutting. Lightly grease the parchment as well. Set the pan aside.

Step 2: Mix the wet ingredients

In a medium mixing bowl, whisk the melted and slightly cooled butter with the packed light brown sugar and granulated sugar until the mixture looks thick, glossy, and well combined, about 30–45 seconds. Add the egg, egg yolk, vanilla extract, and lemon zest (if using). Whisk again until the mixture is smooth, slightly lightened in color, and no streaks of egg remain. This helps create a dense, fudgy blondie instead of a cakey one.

Step 3: Add the dry ingredients

In a separate small bowl, whisk together the flour, baking powder, and salt. Sprinkle this dry mixture over the wet mixture. Using a spatula or wooden spoon, gently fold the dry ingredients into the wet just until no dry flour patches remain. Stop as soon as the batter looks uniform; overmixing at this stage can make the blondies tough.

Step 4: Fold in the raspberries and white chocolate

Add the raspberries to a small bowl and sprinkle them with 1–2 teaspoons of flour. Gently toss to coat. This light flour coating helps prevent them from sinking and reduces bleeding into the batter.

Fold 3/4 cup (about 125 g) of the white chocolate chips or chunks into the batter. Then gently fold in the floured raspberries, using as few strokes as possible so the berries stay mostly whole. The batter will be thick and a bit sticky; that is exactly what you want for dense blondies.

Step 5: Spread the batter and add toppings

Scrape the batter into your prepared pan. Use a spatula to spread it evenly into the corners and smooth the top. Scatter the remaining 1/4 cup (about 45 g) white chocolate over the surface. If you saved a few extra raspberries, dot them on top as well, pressing them very lightly into the batter so they are mostly nestled but still visible.

Step 6: Bake until golden and just set

Place the pan in the preheated oven and bake for 25–30 minutes. The blondies are done when the edges are golden brown, the top looks set and slightly shiny, and a toothpick inserted near the center comes out with a few moist crumbs but no wet batter. They will continue to firm up as they cool, so do not wait until the toothpick comes out completely clean or they will be dry.

Step 7: Cool, slice, and serve

Transfer the pan to a wire rack and let the blondies cool completely in the pan, at least 30–45 minutes. For extra neat slices, you can chill them in the fridge for 20–30 minutes after they reach room temperature.

Once cool, use the parchment overhang to lift the entire slab of blondies out of the pan. Place on a cutting board and, if you like, sprinkle lightly with flaky sea salt. Use a sharp knife to cut into 16 squares (4 by 4 grid) or 9 larger pieces. Wipe the knife between cuts for the cleanest edges. Serve as-is, or plate with a few fresh raspberries on the side.

Pro Tips

• Do not overbake. Pull the blondies from the oven when the center is just set and a toothpick shows moist crumbs. They firm up as they cool and stay soft and fudgy.
• Use room temperature eggs. Cold eggs can cause the butter to solidify and make the batter streaky. If needed, place eggs (still in their shells) in warm water for 5–10 minutes.
• Measure flour carefully. Too much flour leads to dry, cakey bars. Spoon flour into your measuring cup and level with a straight edge, or use a scale for best accuracy.
• Fold raspberries gently. They are delicate and will break apart if overmixed. A light flour coating plus minimal folding keeps attractive raspberry pockets throughout.
• Chill for clean slices. If presentation matters, chill the cooled blondies briefly before cutting. The white chocolate and raspberries firm up and cut into picture-perfect squares.

Variations

• Lemon-Raspberry Blondies: Increase lemon zest to 1 tablespoon and add 1 tablespoon fresh lemon juice to the wet ingredients. The extra citrus sharpens the raspberry flavor and balances the sweetness of the white chocolate.
• Raspberry Jam Swirl: Dollop 3–4 tablespoons raspberry jam over the batter in the pan and swirl gently with a knife or skewer before baking. This gives gorgeous marbled tops and extra berry flavor.
• Triple Chocolate Blondies: Replace half of the white chocolate (1/2 cup) with milk or dark chocolate chips. The mix of tart raspberries with both white and dark chocolate is rich and bakery-worthy.

Storage & Make-Ahead

Once completely cooled, store the blondies in an airtight container at room temperature for up to 3 days. To keep them extra soft, you can place a small piece of parchment between layers. For longer storage, refrigerate for up to 5 days; bring to room temperature before serving for the best texture.

To freeze, wrap individual blondie squares tightly in plastic wrap, then place them in a freezer-safe bag or container. Freeze for up to 2 months. Thaw at room temperature or gently warm in the microwave for 10–15 seconds to revive the fudgy texture.

You can also prepare the batter up to 1 day ahead, spread it in the pan, cover tightly, and refrigerate. Let the chilled batter sit at room temperature for about 15–20 minutes, then bake as directed, adding a couple of extra minutes if needed.

Nutrition (per serving)

Approximate values per blondie (1 of 16): about 250 calories, 12 g fat, 7 g saturated fat, 35 mg cholesterol, 33 g carbohydrates, 21 g sugar, 1 g fiber, 4 g protein, and 95 mg sodium. These numbers are estimates and will vary based on the exact brands and amounts you use.