Description
These Costco Marshmallow Crispy Cookies are everything a cookie should be—crispy edges, soft chewy center, and a gooey marshmallow core that toasts up golden and stretchy. Whether you’re making them for a casual dessert, a bake sale, or a cozy weekend treat, they hit all the sweet spots. This easy recipe brings together the fun of crispy cereal treats and the comfort of peanut butter cookies in one irresistible bite. They’re perfect as a quick dessert, a fun after-school snack, or part of your holiday cookie box. If you’re looking for breakfast ideas, healthy snack upgrades, or easy dinner desserts, add this one to your list of must-make food ideas.
Ingredients
1 cup Salted Butter
1 cup Brown Sugar
1/2 cup Granulated Sugar
1 cup Creamy Peanut Butter
2 large Eggs
2 teaspoons Vanilla Extract
1 1/2 cups All-Purpose Flour
1 teaspoon Baking Soda
1/2 teaspoon Salt
1 cup Old-Fashioned Oats
1 1/2 cups Crisped Rice Cereal
1 cup Mini Marshmallows
Instructions
1. Cream together softened butter with both sugars until light and fluffy.
2. Mix in peanut butter, vanilla, and eggs until smooth.
3. In a separate bowl, whisk flour, baking soda, and salt.
4. Add dry mix to wet ingredients and stir until just combined.
5. Fold in oats and crisped rice cereal.
6. Scoop dough onto lined baking sheets.
7. Press 2-3 mini marshmallows into each dough ball.
8. Bake at 350°F (175°C) for 10–12 minutes.
9. Let cool 5 minutes on tray, then transfer to wire rack.
Notes
Don’t skip the salted butter—it balances the sweetness.
Use old-fashioned oats for the best chewy texture.
Microwave for 10 seconds to re-soften the marshmallow center after storing.
- Prep Time: 10 minutes
- Cook Time: 12 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 cookie
- Calories: 210
- Sugar: 18g
- Sodium: 150mg
- Fat: 9g
- Saturated Fat: 4g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 20mg
Keywords: marshmallow cookie, crispy cookie, Costco copycat cookie, peanut butter cookie, gooey cookie