Easy Christmas Monster Cookies made with peanut butter, oats, oat flour, holiday M&M's and white chocolate chips. These no chill holiday cookies are fun, chewy, and kids adore them!
Preheat oven to 350 degrees F and line 2 cookie sheets with unbleached parchment paper. In a large bowl, add butter, peanut butter and sugar, then beat with an electric mixer until creamy. Add egg and vanilla extract, beat until combined.
Add baking soda, salt, oat flour, oats and beat until cookie dough forms. Add candies and chocolate chips, and stir with a spatula.
Scoop a heaping amount of dough with medium cookie scoop (my cookie dough balls weigh 1.5 oz) or a heaping tablespoon, and roll into balls. Place on prepared baking sheets 2-3 inches apart and flatten a bit. Cookies spread but not like regular ones.
Bake for 10 minutes and remove while cookies appear underbaked, puffy and light in color. Let cookies cool on a baking sheet for 15 minutes before transferring onto a cooling rack to cool more.
Notes
Store: Store in a container for up to 5 days.
Freeze: Bake, cool cookies completely, place in a resealable plastic bag or container and freeze for up to 3 months. Thaw on a counter for a few hours.
Butter: Softened butter means a dent appears when you touch it with a finger. To soften butter, just leave it at room temperature for 3-4 hours. To speed up softening, cut up in cubes. If you use salted butter, omit salt. I also do not recommend coconut oil because cookies will be cake-y.
Sugar: I recommend white sugar. I tested coconut sugar and cookies were a bit more cakey but you can.
All-purpose flour: Replace 1 cup of oat flour with 2/3 cup of regular flour or just weight 88 grams of wheat flour on kitchen scales for the most accurate measurements.