Name: Delicious Crispy Cookies (Costco Copycat) Recipe
Prep time: 15 min
Cook time: 13 min
Total time: 28 min
Cuisine: American
Ingredients: ½ cup salted butter; 1 large egg (room temperature); 1 teaspoon vanilla extract (vanilla paste recommended if available); ¾ cup brown sugar; ½ cup granulated sugar; ½ tsp baking soda; ¾ tsp salt; 1 cup + 2 tbsp all-purpose flour; 1½ cups rice krispie cereal; ⅔ cup mini marshmallows; Flaked salt for topping

Jump to Recipe· 4.1 from 6 reviews

I absolutely adore these Delicious Crispy Cookies (Costco Copycat) Recipe because they bring such a delightful crunch paired with a subtle chewiness that’s hard to resist. Every bite bursts with a rich brown butter flavor, hints of vanilla, and that surprise texture from the rice krispies and mini marshmallows. I love how they’re perfect for sharing with friends or just enjoying with a cozy cup of tea, and the recipe itself is straightforward enough that I feel confident baking them anytime.

Why You’ll Love This Delicious Crispy Cookies (Costco Copycat) Recipe

What really makes these cookies stand out for me is their incredible flavor profile. The browned butter adds a deep nutty note that gives the cookies a warm, comforting taste, while the sprinkle of flaked salt on top really punches up the sweetness in the best way possible. I also appreciate the little surprises in texture — the crispy rice cereal creates this amazing crunch, and the mini marshmallows soften slightly, giving each bite a playful, gooey contrast. It’s like a cookie and a treat all wrapped in one.

I have to mention how surprisingly easy this recipe is to pull off. Browning butter might sound intimidating, but once you do it once, you’ll see how simple it is and how much it adds to the taste. Plus, folding in the cereal and marshmallows keeps things fun to make and gives the cookie its unique texture. These cookies are perfect for pretty much any occasion — family gatherings, a casual weekend snack, or even when you want to impress guests with something homemade yet effortless. I can’t recommend this Delicious Crispy Cookies (Costco Copycat) Recipe enough because it’s become a total go-to in my kitchen.

Ingredients You’ll Need

A clear glass bowl containing a mixture of chunky, light brown dough with visible small white pieces spread throughout. The dough has a rough, crumbly texture and appears well-mixed but not smooth. The bowl is placed on a white marbled background. photo taken with an iphone --ar 4:5 --v 7

The ingredient list for this recipe is refreshingly simple, but each element plays an essential role in crafting these memorable cookies. From the rich flavor of browned butter to the sweet chewiness of marshmallows and the satisfying crisp from rice cereal, every bite is thoughtfully textured and flavorful.

½ cup salted butter: Produces that glorious browned butter flavor and ensures a tender crumb.
¾ cup brown sugar: Adds moisture and caramel undertones that make these cookies extra chewy.
½ cup granulated sugar: Balances sweetness and helps develop a light crisp exterior.
1 large egg (room temperature): Binds everything together and adds richness.
1 teaspoon vanilla: I like vanilla paste here for intense flavor but pure vanilla extract works great too.
½ tsp baking soda: Gives the cookies just enough lift without puffing them up too much.
¾ tsp salt: Enhances all the sweet flavors and harmonizes the taste.
1 cup + 2 tbsp all-purpose flour: The perfect amount for structure with a tender bite.
1½ cups rice krispie cereal: Adds a satisfying crunch that sets these apart.
⅔ cup mini marshmallows: Melt slightly inside the cookie for delightful gooeyness.
Flaked salt for topping: A finishing touch that elevates the flavor complexity.

Directions

Step 1: Preheat your oven to 350 degrees Fahrenheit and line a baking sheet with parchment paper so your cookies won’t stick.

Step 2: Take ½ cup of salted butter and melt it in a medium saucepan over medium heat. Keep stirring as it cooks past the foam stage until it turns a golden brown color and smells nutty. This is the magic moment when the flavor develops beautifully. Be sure to watch closely because it can burn fast!

Step 3: Pour the browned butter into a bowl and put it into the fridge or freezer to cool down for around 10 minutes. You want it cool enough to mix but still liquid.

Step 4: In a mixing bowl, combine the cooled brown butter with both brown and granulated sugar. Add the egg and vanilla, then mix it all together on low speed until smooth, about 30 seconds. This keeps the batter well-incorporated without overblending.

Step 5: Gently add salt, baking soda, and flour to the wet mixture. Fold these ingredients in slowly and carefully to avoid overmixing, which can toughen cookies.

Step 6: Fold in the rice krispie cereal first, followed by the mini marshmallows. Make sure they’re evenly distributed so every cookie gets that perfect crunch and chew.

Step 7: Using a 3-tablespoon cookie scoop, drop large balls of dough onto your prepared baking sheets. Space them generously, about 4 to 5 cookies per sheet, because they spread thin and wide.

Step 8: Bake the cookies for 10 to 13 minutes, or until you see a light golden brown forming around the edges. Watch carefully to avoid overbaking, as you want a chewy center.

Step 9: Right after removing the cookies from the oven, sprinkle a pinch of flaked salt on top to enhance all the flavors. Let the cookies cool on the sheet for several minutes before transferring to a wire rack.

Servings and Timing

This recipe yields about 13 delicious cookies, making it ideal for sharing with family or friends without overdoing it. Prep time is roughly 15 minutes, which includes melting and browning the butter and mixing the dough. Bake time is around 10 to 13 minutes per batch, with a needed cooling period of at least 10 minutes to set the texture. In total, you’re looking at approximately 36 minutes from start to finish, which is pretty quick for such a satisfying treat.

How to Serve This Delicious Crispy Cookies (Costco Copycat) Recipe

A soft, round cookie broken in half lies on a white marbled surface, showing melted white cheese stretching between the two uneven pieces. The cookie is a golden-brown color with a slightly rough texture and small chunks visible throughout. Coarse white salt crystals are scattered over the cookie's surface, adding a touch of sparkle. The cookie edges are crisp and a bit darker, while the center looks chewy and warm. Photo taken with an iphone --ar 4:5 --v 7

When I serve these cookies, I love to pair them with a cold glass of milk or a warm cup of coffee to balance all the sweetness and give a comforting feel. Sometimes, I like to arrange them on a pretty platter sprinkled with extra flaked salt or a light dusting of powdered sugar for a festive touch and visual appeal. Their golden edges and speckled marshmallows make them look as good as they taste.

These cookies are perfect for casual get-togethers, kids’ parties, or even as a sweet ending to a family dinner. I’ve found they’re also great to pack in lunch boxes or bring to holiday cookie exchanges because they transport well and hold their texture. I usually recommend serving them at room temperature to enjoy their full crisp-chewy contrast, but if you prefer, a brief warm-up in the oven revives that fresh-baked feeling splendidly.

If you want to elevate the presentation, try serving the cookies alongside a scoop of vanilla ice cream or a drizzle of caramel sauce. For drinks, I love pairing these with a vanilla or caramel latte, but if you’re feeling fancy, a dessert wine like Moscato or a spiced cocktail could be fantastic companions too.

Variations

I love experimenting with this Delicious Crispy Cookies (Costco Copycat) Recipe to suit different tastes and dietary needs. For instance, swapping the all-purpose flour for a gluten-free blend can make these safe for gluten-sensitive friends without sacrificing texture. You can also substitute the mini marshmallows with dairy-free or vegan versions if you want to keep this treat plant-based.

Flavor-wise, adding a handful of chopped nuts like pecans or walnuts can add an extra layer of crunch and depth. You could also stir in some cinnamon or even a pinch of cayenne pepper for a surprising twist that makes the cookies truly one of a kind. Alternatively, switching up the cereal to something like cornflakes or even crushed pretzels gives a new texture and flavor dynamic.

For a different take on the cooking method, I’ve tried making smaller cookie bites for easier snacking or pressing the dough thinly and baking it into cookie bars that are perfect for slicing and sharing. Each variation keeps the spirit of this copycat recipe alive, proving just how versatile it is while still delicious.

Storage and Reheating

Storing Leftovers

After enjoying the freshly baked batch, I store leftover cookies in an airtight container at room temperature. This keeps them crisp on the outside and tender inside for up to 4-5 days. I like to separate layers with parchment paper to prevent sticking and preserve their delicate marshmallow bits.

Freezing

If I want to save some for later, freezing works wonderfully. I place the cookies in a single layer on a baking sheet until frozen solid, then transfer them to a resealable freezer bag or container. Stored this way, they keep their best quality for about 2-3 months. When I’m ready to enjoy, I thaw them at room temperature until soft and warm slightly in an oven for a fresh, just-baked feel.

Reheating

To reheat, I avoid the microwave as it tends to make the marshmallows too gooey and the cookies soggy. Instead, I pop them in a preheated oven at 300 degrees Fahrenheit for about 5 minutes. This revives the crispy edges and melts the marshmallows just enough to recapture their delightful texture. If you’re in a hurry, a quick 10-15 second warming in the microwave can work, but I highly recommend the oven method for the best results.

FAQs

Can I use salted or unsalted butter for this recipe?

I prefer using salted butter because it adds subtle seasoning that enhances the flavor. If you only have unsalted butter, be sure to use the exact amount of added salt called for in the recipe to keep balance.

Why do I need to brown the butter? Can I skip this step?

Browning the butter is what gives these cookies their rich, nutty flavor that sets them apart from typical recipes. While you could skip it, the flavor won’t be as deep or complex, so I highly recommend not skipping this step!

What’s the best way to avoid overbaking these cookies?

Keep a close eye during the last few minutes of baking. The edges should be lightly golden brown while the centers still look slightly soft. They will firm up as they cool, so it’s better to pull them out a bit early than too late.

Can I make these cookies vegan?

Yes, with some ingredient swaps! Use vegan butter, a flax or chia egg replacer, and vegan marshmallows. The texture may differ slightly, but the essence of the cookie remains delicious.

How do the rice krispies affect the texture?

The rice krispies add an unmistakable crispness that contrasts beautifully with the chewy center and gooey marshmallows. Without them, the cookies would lose some of their signature crunch and lightness.

Conclusion

I hope you feel as inspired as I do to try this Delicious Crispy Cookies (Costco Copycat) Recipe. It’s truly become a beloved favorite of mine because it combines easy preparation with complex flavors and unique textures that keep everyone coming back for more. Whipping up a batch is like sharing a little warmth and joy, and I’m sure it will become a staple in your kitchen too!