These blondies are the kind of baking project that surprises everyone at first bite: chewy, buttery, studded with chocolate, and finished with crunchy, salty potato chip shards. They’re not a gimmick; the chips add a bright, brittle contrast that plays against the dense, fudgy interior. If you like sweet-and-salty snacks, this is a focused, reliable way to bring that combo to your cookie bar game.

I test recipes the practical way—small tweaks, honest timing, and paying attention to texture rather than just technique. This one keeps things simple: a single bowl for wet ingredients, a quick toss of dry ingredients, and a 9×13 pan. It sounds straightforward because it is. You get predictable results when you respect a few key details: cooled melted butter, room-temperature eggs, and not overmixing the batter.

Below you’ll find clear notes on the ingredients, step-by-step instructions pulled directly from the recipe, troubleshooting tips, equipment you’ll actually use, and a keep-it-fresh plan so these blondies taste great for days. No fluff—just exactly what you need to bake, serve, and enjoy.

Ingredient Notes

Ingredients

2 1/8 cups all-purpose flour — provides structure and chew; measure with a spoon-and-level for accuracy.
3/4 teaspoon sea salt — balances sweetness; part goes in the batter and a little on top enhances flavor.
1/2 teaspoon baking soda — gives a gentle lift and keeps the crumb tender.
12 tablespoons butter — melted and cooled to room temperature; supplies richness and moisture.
1 cup packed light brown sugar — adds moisture, depth, and a slight caramel flavor.
1/2 cup granulated sugar — for structure and crisp edges when baked.
2 large eggs — at room temperature; act as a binder and add tenderness.
2 teaspoons vanilla extract — rounds out the flavor and enhances the brown-sugar notes.
1 1/4 cups semi-sweet chocolate chips — pockets of melty chocolate throughout the blondies.
1 1/4 cups chopped Lay’s Wavy Original Potato Chips — mixed into the batter for unexpected crunch and salt.
1/4 cup additional chopped potato chips — reserved for the top so the crunch is visible and stays crisp.
Sea salt — a light finishing sprinkle to amplify the sweet-salty contrast.

Build (Potato Chip Chocolate Chip Blondies) Step by Step

Preheat oven to 350°F (175°C). Spray a 9×13-inch baking pan with nonstick cooking spray and set aside.
Coarsely chop the Lay’s Wavy Original potato chips; measure 1 1/4 cups chopped chips for the batter and set aside 1/4 cup chopped chips for the top.
In a medium bowl, whisk together 2 1/8 cups all-purpose flour, 3/4 teaspoon sea salt, and 1/2 teaspoon baking soda. Set the dry mixture aside.
Melt 12 tablespoons butter, then let it cool to room temperature. (If the butter is already melted and cooled, proceed.)
In a large bowl (or the bowl of a stand mixer), combine the cooled melted butter with 1 cup packed light brown sugar and 1/2 cup granulated sugar until combined.
Add 2 large eggs (at room temperature) and 2 teaspoons vanilla extract to the butter-sugar mixture and mix until smooth.
Gradually add the dry ingredients to the wet ingredients and mix on low speed (or stir gently with a spatula) just until combined—do not overmix.
Fold in 1 1/4 cups semi-sweet chocolate chips and the 1 1/4 cups chopped potato chips until evenly distributed.
Pour the blondie batter into the prepared 9×13-inch pan and smooth the top with a spatula. Sprinkle the reserved 1/4 cup chopped potato chips evenly over the top, and lightly sprinkle with sea salt.
Bake for 28–30 minutes, or until the top is light golden brown and the edges begin to pull away from the pan.
Remove the pan from the oven and transfer to a wire rack. Cool completely to room temperature in the pan.
Once cooled, cut into squares and serve.

Why This Recipe Is Reliable

This recipe is reliable because it controls the elements that matter most for blondies: fat, sugar, and gentle mixing. The formula uses melted butter to give a dense, fudgy texture rather than a cakey one. Brown sugar adds moisture and chew; granulated sugar contributes structure and edge crispness. Together they create a balance that survives being studded with crunchy mix-ins.

Timing and temperature are straightforward. The 350°F bake and 28–30 minute window produce a set top with a tender interior. Cooling completely in the pan allows the bars to finish setting so you get clean squares instead of crumbling pieces. The recipe’s simplicity removes variables that commonly cause inconsistency—one bowl wet component, one bowl dry, a single fold to combine.

Dairy-Free/Gluten-Free Swaps

If you need dairy-free, use a solid plant-based butter substitute that behaves like butter when melted. Melt it and let it cool to roughly the same temperature as called for; the texture benefit comes from fat content, so higher-fat options work best. For flavor, a touch more vanilla can compensate if the butter flavor is milder.

For gluten-free, use a 1:1 gluten-free all-purpose flour blend that’s designed to replace wheat flour cup-for-cup. Make sure it contains a binder like xanthan or guar gum, or the blondies may be crumbly. Because gluten-free flours vary, watch the batter consistency—if it seems unusually dry, allow the batter to rest briefly so the flour hydrates before baking.

Gear Up: What to Grab

Keep your tool list short and useful. You need:

9×13-inch baking pan — for the correct thickness and baking time.
Nonstick cooking spray — or line the pan with foil for easy removal.
Mixing bowls — one medium for dry, one large for wet.
Spatula — for folding and smoothing batter into the pan.
Measuring cups and spoons — accuracy matters for flour and leavening.
Wire rack — for cooling so the blondies set properly.

Troubles You Can Avoid

Dense or dry blondies

Cause: Overbaking or too much flour packed into the cup when measuring. Fix: Pull the pan at the lower end of the bake window and use spoon-and-level to measure flour. The center will firm as it cools.

Crumbling instead of clean squares

Cause: Cutting while warm. Fix: Allow the pan to cool completely on a wire rack. If you need pieces sooner, chill the pan in the fridge for 30–45 minutes to firm the bars before slicing.

Soggy chips on top

Cause: Adding very fine crumbs or pressing chips too far into the batter. Fix: Reserve larger chip pieces for the top and gently press them onto the surface just before baking so they stay crisp.

Adaptations for Special Diets

Vegetarian: This recipe is already vegetarian-friendly as written.

Vegan: For a vegan version you’ll need an egg replacer (such as a commercial egg replacer or a flax egg), plant-based butter, and ensure your chocolate chips are dairy-free. Expect slight differences in texture; flax or chia egg substitutes can change chewiness.

Nut allergies: The base recipe is nut-free. Double-check chocolate chips and any butter substitute labels to ensure no cross-contamination if that’s a concern.

Flavor Logic

Why potato chips? They contribute two things: crunch and salt. The wavy texture breaks into sturdy shards that stay crunchy inside the batter and on top. The salt in the chips plus the light sprinkle of sea salt on top creates small bursts of savory contrast that make the chocolate and brown-sugar notes pop.

Semi-sweet chocolate chips keep the blondies from becoming cloyingly sweet and pair well with the caramel-like flavor of brown sugar. Vanilla rounds out those flavors without competing. Baking soda gives a gentle rise that keeps the texture tender instead of cakey—perfect for a dense blondie.

Keep-It-Fresh Plan

Room temperature: Store baked, cooled blondies in an airtight container at room temperature for up to 2 days. Place parchment between layers to prevent sticking.

Refrigerator: For a firmer texture and to extend freshness, refrigerate in an airtight container for up to 5 days. Allow pieces to come to room temperature for a few minutes before serving, or enjoy chilled.

Freezer: Wrap individual squares tightly in plastic wrap and freeze in a sealed bag for up to 2 months. Thaw at room temperature or warm gently in a low oven (300°F) for 5–8 minutes to refresh the surface crispness.

Frequently Asked Questions

Can I use different potato chips?
Yes, but Lay’s Wavy Original are specified for their sturdy, salty profile. Thinner chips may disintegrate and become soggy; kettle-style or wavy chips hold up best.

Can I halve the recipe?
You can, but adjust pan size and bake time—use an 8×8 pan and start checking at 20–22 minutes. Because this post gives the original full-batch amounts, follow the ingredient list and steps as written for consistent results.

Why cooled melted butter?
Hot butter can cook the eggs when mixed, and too-warm batter may lead to uneven texture. Cooling the butter preserves the proper emulsion with the sugars and eggs for a smooth batter.

Can I add nuts?
Yes—if you want nuts, fold them in with the chips and chocolate chips. Keep size modest so the bars maintain an even bake and don’t become overly dense.

Ready to Cook?

Preheat the oven, gather the few bowls you’ll need, and have the potato chips at hand. The recipe is built for straightforward steps and dependable timing. Follow the ingredient list and the step-by-step directions above. Let the pan cool completely before slicing to get neat squares and clean bites. These blondies travel well to parties, disappear fast at a potluck, and make a reliable riff on classic blondies when you want something a little salty, a little crunchy, and firmly chocolatey.

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