The final cookie for my series of extreme cookies for the month of March is these Ultimate S'mores Cookies! Summer is just around the corner and one of my favorite things about summer is bonfires and s'mores. These cookies are amazing! Chocolate cookie dough with a marshmallow stuffed in the center and a graham cracker coating, these cookies are then finished off with a Hershey's Chocolate square.

The dough for these cookies is actually the same as my Ultimate Reese's Cookies and my Nutty About Oreo Cookies. If you love these cookies, I highly suggest you give this one a try as well. Otherwise, if you love this cookie, then I suggest you give one of these two cookies a try!

Ingredient Highlights:

Below is a summary of some of the key ingredients in these Ultimate S'mores Cookies!

Espresso Powder. If you don't have espresso powder as one of your pantry staples, I highly suggest changing that ASAP. I typically use espresso powder in chocolate baked goods to enhance the chocolate flavor. It can also be useful to give your baked goods a coffee flavor. I chose to add the espresso powder to these cookies to enhance the chocolate flavor and ensure that they were rich and delicious! Espresso powder can be found in most grocery store baking isles and is optional for this recipe, but it is definitely recommended!
Cake Flour. Utilizing cake flour in cookies gives them a more light, fluffy, and delicate texture. I wanted these cookies to be very soft but not as cake-like as my Dark Chocolate Raspberry Cookies so you'll notice that these ones don't have as much cake flour and more all-purpose flour. If you do not want to buy cake flower, there is a common substitution for it that you can try instead. For the ¾ cups of cake flour that this recipe calls for, you would measure out ¾ cups of all-purpose flour. You then remove 1 ½ tablespoons of the flour and replace it with 1 ½ tablespoons of cornstarch or corn flour (preferably corn flour but either works).
Chocolate Chips. You can use whatever kind of chocolate chips you would like for this recipe. I used semi-sweet chocolate chips which were delicious but you can choose based on how sweet or rich of a chocolate flavor you want.
Marshmallows. I used a regular size marshmallow in the center of these cookies. I like having a marshmallow center and am obsessed with the look of pulling the cookies apart and having the marshmallow oozing out of the center!

Tools to Make This Recipe:

Below is a summary of the key tools that you will need to make these Ultimate S'mores Cookies!

Stand Mixer. You will need this to mix the cookie dough. Stand mixers are great! I love Kitchenaid stand mixers. I have owned both tilt head mixers and bowl lift mixers from Kitchenaid and I prefer the bowl lift option. It seems more stable to me when mixing thicker doughs.
Hand Mixer. If you don't want to invest in a stand mixer, you can get a simple hand mixer like this one. I use hand mixers all the time as well and if you are not someone who bakes often, this is a good alternative
Sheet Pan. This will be needed to bake the cookies (Note: I have not tested this linked product. The one that I have is not found online anymore but this is the same brand as the one I have.)

Pro Tips For Making These Cookies:

Below are a few pro tips to making sure that these Ultimate S'mores Cookies come out perfectly!

Measure you flour correctly. It is important to scoop and level your flour so you do not accidentally add too much. In order to properly scoop and level flour, scoop the flour out with a spoon and sprinkle it into your measuring cup. You can then level with a knife before adding the flour to the mixture.
Allow cookies to cool for a while before transferring to a cooling rack. They will be very delicate right out of the oven so you will want to give them time so they do not fall apart when you are transferring them.
Ideally, you will want to eat these cookies within 5 days of making them. Store the cookies in an airtight container.