Why settle for ordinary cookies when you can have a Giant Cookie?!? With this crazy easy recipe you’ll just toss everything in your cast iron skillet. Then you can just sit back and await your oh so sweet, massive cookie bliss!

Baked giant cookie in cast iron skillet.
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Some days we all just need a cookie… like a really BIG cookie. And by big, I’m talking a Giant Cookie!

Do you know what I’m talking about?

One or two regular sized cookies just won’t do. No, this day calls for something extraordinary and slightly over-the-top. Something like this indulgent cookie!

Denise writes: "So fun and scrumptious. Great for the weekend!"

One look at this massive cookie baking in the oven and you’ll know you’ve just stumbled across the Best giant cookie recipe ever!

Plus, this cookie gets bonus points for being ridiculously EASY to make!

To start, it requires far less prep time than traditional cookies. In fact, you can skip the rolling and scooping entirely, because with this cookie you’ll just press the cookie dough right into your skillet and you’re done!

Then, you’ll just pop the whole skillet in the oven and wait for the giant cookie magic to happen!

Trust me, nothing beats the perfect, crispy, golden cookie edges that only a skillet can give you!

Everything about this over-the-top cookie feels like a celebration! So you should definitely consider serving it up as a giant birthday cookie. Talk about one of the Best Birthday Party Ideas ever!

It’s also one of those Fall Baking Recipes you’ll love to make for fall parties year after year. You can serve it alongside some of my Easy Appetizer Recipes and this orange Fall Party Punch to create the ultimate party layout!

Oh… and you can enjoy this cookie literally any way you like!

I cut mine into pie shaped pieces, but you could have fun and try cutting it into all sorts of different shapes and sizes. You could even grab a fork and a knife… and just dig right in!

So are you ready to get baking? Come on… you know you want to!

Here’s what you’ll need to get started…

Reeses Giant Cookie ingredients including baking powder, vanilla, and baking soda.

Ingredients

You’ll just need the following ingredients to create this outrageously easy giant cookie recipe right in your skillet…

  • All Purpose Flour
  • Baking Powder
  • Baking Soda
  • Salt – I like to use Sea Salt for best flavor.
  • Butter – I used unsalted to ensure the optimal salt content.
  • Eggs
  • Brown Sugar – See How to Keep Brown Sugar Soft!
  • Granulated Sugar – Just your basic white sugar.
  • Reese’s Pieces
  • Reese’s Minis – These are the adorable Reese’s mini peanut butter cups.
  • Vanilla Extract
  • Orange Sprinkles – These add a festive touch and compliment the look of your Reese’s candies.

You’ll also need a 12″ Cast Iron Skillet to prepare this recipe for a giant cookie.

Cookie Dough in a mixing bowl.

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It’s actually so easy to make this giant birthday cookie recipe loaded up with Reese’s galore!

Here’s what you’ll do…

1. Start by mixing up your dough.

Reese's mixed into cookie dough.

2. Then stir in your Reese’s Pieces with a large spoon.

3. Lightly grease your skillet, then transfer the dough into the skillet.

4. Then bake this giant birthday cookie per the instructions in the recipe card below.

Raw cookie dough with Reese's in a cast iron skillet.

5. Right when your cookie is done, you can press in the Reese’s Minis to the top of the cookie.

6. Allow the cookie to cool before serving slicing and serving it straight from your skillet.

Easy Peasy!! Giant cookie recipes don’t get any easier than this!

Scroll down for the printable recipe card with detailed, step-by-step instructions.

A huge cookie with peanut butter cups and reeses pieces.

Want to change things up? Go for it!

Here are a few delicious giant cookie variations I know you’ll love…

Big Butterfinger Cookies

For this humongous cookie, you’ll swap the Reese’s Pieces for one 8 oz. bag of Butterfinger Baking Baking Bits, and swap the Reese’s Minis for 20 Butterfinger Bites (each cut in half)

For this enormous chocolate chip cookie, you’ll swap all the Reese’s candy for chocolate morsels and colorful party sprinkles!

Prep Ahead Tip

Your giant cookie dough can be made in advance if prepping ahead. After preparing dough and stirring in Reese’s Pieces, cover tightly and store in refrigerator for up to 2 days.

Storage Tip

Store individual slices or pieces of your cookie covered in an airtight container. Or simply cover the entire skillet with foil and leave on the counter. Leftovers can be stored at room temperature for up to 3 days.

Cast iron skillet of Reese's cookie.

Here’s What Your Frugal Friends Are Saying About These Giant Birthday Cookies…

Kimberley writes: “So crazy yummy”

Rebecca writes: “Such a fabulous recipe!”

Stephanie writes: “Delicious”

Christie writes: “Sooo amazing! Super easy to make!”

Mary writes: “Make these all the time for the grandkids – they love them”

Joanna writes: “So indulgent and delicious!”

Katherine writes: “So Amazing!!!”

Sherri writes: “This is a peanut butter lover’s dream come true!”


Did You Enjoy This Recipe? ⭐️⭐️⭐️⭐️⭐️ Leave a comment & review below!

Why settle for ordinary cookies when you can have a Giant Cookie?!? With this crazy easy recipe you'll just toss everything in your cast iron skillet. Then you can just sit back and await your oh so sweet, massive cookie bliss!
Servings: 12
Giant cookie baked in cast iron skillet.
Prep Time: 10 minutes
Cook Time: 33 minutes
Total Time: 43 minutes
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Ingredients 

  • 3 cups All Purpose Flour
  • 1 tsp. Baking Powder
  • 1 tsp. Baking Soda
  • 1/2 tsp. Salt
  • 2 eggs
  • 1 cup packed Brown Sugar
  • 1 cup Granulated Sugar
  • 2 cups Reese’s Pieces (a little less than one 15 oz. bag)
  • 20 Reese’s Minis
  • 1 1/2 cups Unsalted Butter, softened
  • 1 1/2 tsp. Vanilla Extract
  • 1 tbsp. Orange Sprinkles (optional)

Instructions 

  • Gather your ingredients.
    Reese's Skillet Cookie ingredients including baking powder, vanilla, and baking soda.
  • Preheat oven to 325 degrees.
  • Cut Mini Reese’s in half, and set aside.
  • In medium bowl, whisk together Flour, Baking Powder, Baking Soda and Salt until well combined.
  • In large mixing bowl, cream together Butter, Brown Sugar, White Sugar, and Vanilla Extract with mixer. After well mixed, add eggs and continue mixing.
  • Gradually mix in flour mixture until all is well combined.
    Cookie Dough in a mixing bowl.
  • Stir in Reese’s Pieces with large spoon.
    Reese's mixed into cookie dough.
  • Lightly grease 12″ Cast Iron Skillet, then transfer dough into skillet, pressing down evenly with spatula.
    Raw cookie dough with Reese's in a cast iron skillet.
  • Bake for 33 – 40 minutes, or until cookie puffs up and edges are done and crispy. Center will be slightly gooey, which adds to the decadence of this over-the-top treat.
  • Remove from oven and immediately sprinkle with optional Orange sprinkles, then gently press Reese’s minis evenly into top of cookie. Any leftover Reese’s Pieces can also be gently pressed into top of cookie.
  • Allow cookie to cool in the Skillet for a few minutes, then go to town! Slice up pieces like a pie, or serve straight from the skillet with big scoops of Ice Cream in the center! ENJOY!
    Giant cookie baked in cast iron skillet.

Notes

  • Smaller Cookie Tip: For a smaller cookie, simply cut the recipe in half, use an 8″ cast iron skillet, and bake until done (increasing bake time as needed) and edges are crispy and center is slightly gooey.
  • Prep Ahead Tip: Your cookie dough can be made in advance if prepping ahead. After preparing dough and stirring in Reese’s Pieces, cover tightly and store in refrigerator for up to 2 days.
  • Storage Tip: Store individual slices or pieces of your cookie covered in an airtight container. Or simply cover the entire skillet with foil and leave on the counter. Leftovers can be stored at room temperature for up to 3 days.
  • FAQ’s: For answers to Frequently Asked Questions or tips for common substitutions and variations, please refer to the detailed information above this recipe card.
iconLike this recipe? Rate & comment below!

About Heidi Miller

I'm a recipe developer, food photographer, writer, and the frugal girl living here in sunny AZ with my husband! Here you’ll find trusted Quick and Easy Recipes with step-by-step instructions and massive flavor! Who knew cooking and baking could be SO ridiculously simple and delicious at the same time?

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4 Comments

  1. Jen says:

    This is such a great cookie recipe! I’ve made it a few times and it is always a hit! I like to add in chocolate chips and peanut butter chips to make it even more decadent!

    1. Heidi says:

      Ooh… those sound like delicious additions, Jen! 🙂

  2. Christie says:

    Wow that sounds really DELICIOUS! I love reeses pieces!

    1. Heidi says:

      So do I, Christie… they’re so divine! 🙂 It really is a dreamy dessert… perfect for a party or weekend splurge!