If you’re on the hunt for a dessert that feels like a warm hug in every bite, look no further than the Ultimate Blondies with Mix-Ins and Flaky Sea Salt Recipe. These blondies combine buttery richness with just the right touch of chewiness, punctuated by melty mix-ins and finished with a delicate sprinkle of flaky sea salt that takes every flavor up a notch. Whether you love classic chocolate chips or prefer a crunchy nutty twist, this recipe is as versatile as it is delicious, promising a crowd-pleasing treat that’s equally perfect for sharing or indulging solo.

Ingredients You’ll Need

The image shows a baking tray with several ingredients neatly arranged on it, all placed on a white marbled surface. On the left side, there are two blocks of pale yellow butter on white parchment paper. Next to the butter is a small wooden bowl with white powder, likely baking soda or baking powder. Below it, two raw brown-speckled eggs sit close together. Near the bottom left is a small white bowl filled with dark brown vanilla extract. In the center, there is a clear glass bowl filled with white flour, and above it, a large metal bowl holds light brown sugar with a slightly crumbly texture. On the right side, a white bowl contains many small dark brown chocolate chips, filling the bowl almost to the top. The arrangement is clean and organized, with a variety of textures from smooth to crumbly and colors from pale yellow to dark brown. Photo taken with an iphone --ar 4:5 --v 7

This recipe keeps things straightforward with essential ingredients you likely have on hand, each chosen to build that perfect balance of sweetness, texture, and flavor depth. From the golden butter that starts the richness to the vanilla that lifts the entire batch, every component plays a starring role.

1 1/2 sticks (170 grams) unsalted butter: Melts into the batter providing a tender, buttery foundation that browns beautifully in the oven.
1 1/2 cups (300 grams) light brown sugar: Adds sweetness and moisture with a subtle molasses flavor that enhances the overall complexity.
1 large egg plus 1 egg yolk: Bring structure and richness, ensuring the blondies remain chewy yet firm.
2 teaspoons vanilla extract: Infuses the batter with warm, aromatic notes that round out the flavor.
1/2 teaspoon fine sea salt: Balances the sweetness and amplifies all the tastes in each bite.
1/4 teaspoon baking powder: Gives a gentle lift for a slightly airy texture without compromising chewiness.
1 1/2 cups (191 grams) all-purpose flour: The backbone that holds everything together with the perfect crumb.
1 3/4 cups (281 grams) mix-ins of your choice: Whether chocolate chips, nuts, or a blend, these create bursts of texture and flavor throughout.
Flaky sea salt (for sprinkling): The crowning touch that adds an irresistible crunch and savory contrast on top.

How to Make Ultimate Blondies with Mix-Ins and Flaky Sea Salt Recipe

Step 1: Prepare Your Baking Pan and Oven

Start by heating your oven to 350°F to ensure it’s perfectly hot for even baking. Line an 8 by 8-inch metal pan with foil or parchment paper and give it a quick spray of nonstick cooking spray. This prep ensures your blondies come out cleanly and keeps cleanup simple.

Step 2: Melt Butter and Combine with Sugar

Melt the butter gently in a microwave-safe bowl in 30-second bursts until fully liquid. Pour the sugar into the warm butter and whisk to blend well. Let the mixture cool until just warm so your eggs don’t scramble in the next step.

Step 3: Add Eggs and Flavorings

Whisk the large egg and extra yolk into the buttery sugar mixture along with vanilla extract until smooth and glossy. This step is key for creating a supper silky batter that will yield tender, chewy blondies.

Step 4: Mix Dry Ingredients and Fold in Mix-Ins

Sprinkle in sea salt, baking powder, and all-purpose flour, then fold them in gently using a rubber spatula. Finally, stir in 1 1/2 cups of your mix-ins carefully to avoid overmixing — this keeps the texture just right.

Step 5: Bake and Finish with Toppings

Spread the batter evenly in the pan, then scatter your remaining mix-ins on top for a gorgeous finish. Bake for 25 to 35 minutes depending on your preferred gooeyness: less time yields a soft center, longer gives a firmer, golden crust. When out of the oven, cool completely, then sprinkle generously with flaky sea salt for that unforgettable finish.

How to Serve Ultimate Blondies with Mix-Ins and Flaky Sea Salt Recipe

The image shows fifteen square pieces of golden brown cookie bars with visible dark chocolate chips on top. Each bar is thick with a soft-looking texture and sprinkled lightly with sea salt flakes. The bars are spread out on crumpled white parchment paper over a white marbled surface. To the upper left, there is a white bowl filled with dark chocolate chips, and some chips scattered nearby. To the upper right, there is a glass filled with milk, and in the lower right corner, a small white bowl of coarse sea salt is partially visible. The overall lighting is soft and natural, creating a warm and inviting feel. photo taken with an iphone --ar 4:5 --v 7

Garnishes

Flaky sea salt sprinkled on top right after baking makes the flavor pop, but you can also try a dusting of powdered sugar or a drizzle of caramel sauce for an extra-special touch. Fresh berries or a dollop of whipped cream make for a pretty and tasty contrast.

Side Dishes

These blondies shine wonderfully alongside a scoop of vanilla ice cream or a refreshing glass of cold milk. For a grown-up pairing, try a cup of rich coffee or even a dessert wine to complement the buttery sweetness.

Creative Ways to Present

Cut these blondies into bite-sized squares for parties or serve them stacked with layers of frosting between for a playful dessert bar. Wrapping individual pieces in parchment paper tied with twine makes for charming homemade gifts that everyone will adore.

Make Ahead and Storage

Storing Leftovers

Keep any leftover blondies stored in an airtight container at room temperature for up to three days or refrigerate for up to a week. Waiting to slice until serving helps maintain that perfect chewy edge and prevents them from drying out.

Freezing

You can freeze baked blondies by cutting them into portions and wrapping tightly in plastic wrap followed by foil or placing in a sealed freezer bag. Frozen blondies last up to three months and thaw quickly at room temperature.

Reheating

To refresh your blondies, warm slices slightly in the microwave or a low oven for a few minutes until they’re soft and chewy once again. This brings back that just-baked feeling and highlights the gooey mix-ins beautifully.

FAQs

Can I use different mix-ins in the Ultimate Blondies with Mix-Ins and Flaky Sea Salt Recipe?

Absolutely! While chocolate chips and nuts are classics, feel free to experiment with dried fruit, toffee bits, or even white chocolate chunks. The mix-ins add personal flair and texture, making the recipe wonderfully flexible.

How important is the flaky sea salt on top?

It’s a game changer. The flaky sea salt provides a subtle crunch and bursts of savory contrast that balance the sweetness, making these blondies irresistibly complex and sophisticated.

Can I make this recipe gluten-free?

Yes, you can substitute the all-purpose flour for a gluten-free blend designed for baking. Just make sure it includes xanthan gum or another binder to keep the blondies tender and chewy.

What size pan should I use for this Ultimate Blondies with Mix-Ins and Flaky Sea Salt Recipe?

An 8 by 8-inch metal pan is ideal because it ensures even baking and a perfect thickness for chewy but firm blondies. Using a larger pan will make them thinner and might affect baking time.

How do I know when the blondies are done?

Look for lightly golden edges and a center that still jiggles a bit for a gooey texture, or bake a bit longer for a set, cake-like middle. Avoid overbaking if you want that signature chewiness everyone loves.

Final Thoughts

There’s something truly special about the Ultimate Blondies with Mix-Ins and Flaky Sea Salt Recipe that makes it a lifelong favorite. Rich, chewy, and bursting with flavor from those delightful mix-ins and the final sprinkle of sea salt, these blondies invite you to savor every bite. I can’t recommend enough giving this recipe a try—whether for a cozy night in or sharing at your next gathering, it’s sure to become one of your go-to desserts that everyone asks for again and again.