Ingredients
For the Blondies
- Butter (1 cup, melted): Butter is the backbone of these blondies, providing richness and moisture. Using melted butter ensures the blondies have a soft and chewy texture.
- Light Brown Sugar (1 ¾ cups): Brown sugar is key to achieving the deep caramelized flavor that complements the Biscoff cookies. Its molasses content also helps retain moisture, ensuring the blondies stay soft.
- Eggs (2 large + 1 egg yolk): Eggs provide structure and stability. The additional yolk adds extra moisture and richness, resulting in a fudgy texture.
- Vanilla Extract (1 ½ tsp): Enhances the overall flavor and adds warmth to the dessert.
- All-Purpose Flour (2 ¼ cups): Forms the foundation of the blondies, giving them their structure. Accurate measurement is crucial to avoid dense or dry blondies.
- Cornstarch (2 tsp): Adds a tender, melt-in-your-mouth quality to the texture.
- Baking Powder (1 tsp): Ensures the blondies have just enough lift without being cakey.
- Salt (1 tsp): Balances the sweetness and enhances the caramel flavors.
- Biscoff Cookies (12, broken up): These add crunch and bursts of caramelized flavor throughout the blondies.
- White Chocolate Chunks or Chips (1 cup): Creates pockets of creamy sweetness that contrast beautifully with the spiced Biscoff flavor.
- Biscoff Cookie Butter (⅓ cup, melted): Swirled into the batter, this adds a luxurious touch of caramelized spice.
For Decorating
- Biscoff Cookie Butter (2 tbsp, melted): Drizzled on top to enhance the flavor and create a glossy finish.
- Biscoff Cookies (2, broken up): Sprinkled on top for additional texture and visual appeal.
Instructions
Step 1: Prepare Your Baking Dish
Preheat your oven to 350°F (180°C). Spray a 9×9-inch square baking dish with non-stick spray. Line the dish with parchment paper, leaving an overhang on two sides. This will make it easier to lift the blondies out of the pan once baked.
Step 2: Mix the Wet Ingredients
In a large mixing bowl, whisk together the melted butter and light brown sugar until smooth. The mixture should have a glossy consistency. Add the eggs one at a time, whisking well after each addition. Stir in the additional egg yolk and vanilla extract until fully incorporated.
Step 3: Combine the Dry Ingredients
In a separate bowl, sift the all-purpose flour and mix it with cornstarch, baking powder, and salt. Gradually add the dry ingredients to the wet mixture, stirring gently until just combined. Be careful not to overmix, as this can make the blondies dense.
Step 4: Fold in Mix-Ins
Gently fold the broken Biscoff cookies and white chocolate chunks into the batter. This step ensures that every bite of blondie is packed with flavor and texture.
Step 5: Assemble the Blondies
Transfer the batter to the prepared baking dish and smooth it out into an even layer. Melt the Biscoff cookie butter in the microwave in 15-second intervals, stirring between each interval. Drizzle the melted cookie butter over the batter and use a toothpick to swirl it into a decorative pattern. Arrange the 8 whole Biscoff cookies on top, spacing them evenly across the surface.
Step 6: Bake
Bake the blondies for 30 minutes, or until the edges are golden and the center is just set. Avoid overbaking, as this can result in dry blondies. The center should still be slightly soft, as the blondies will continue to set as they cool.
Step 7: Cool and Decorate
Allow the blondies to cool completely in the pan. Drizzle additional melted Biscoff cookie butter over the top and sprinkle with broken Biscoff cookies. This final touch adds a visual element that makes the blondies even more enticing.
Step 8: Slice and Serve
Use the parchment paper overhang to lift the blondies out of the pan. Place them on a cutting board and slice them into 16 squares. Serve and enjoy!
Notes
- Measure flour accurately using the spoon-and-level method or a food scale. Too much flour can make the blondies dry.
- Don’t overmix the batter. Once the dry ingredients are added, stir just until combined.
- Monitor baking time closely. Underbaking slightly is better than overbaking, as it ensures the blondies remain soft and chewy.
- Use high-quality white chocolate for the best flavor and texture.
- Prep Time: 15 minutes
- Cook Time: 30 minutes