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High Altitude Monster Cookies Recipe – Soft & Chewy

Soft and chewy High Altitude Monster Cookies filled with peanut butter, quick oats, chocolate chips, and colorful M&Ms. Every bite of these delicious cookies will have an explosion of flavors with the most amazing texture.

4 high altitude monster cookies stacked on a white plate with M&Ms scattered around

Try out these other High Altitude Cookie Recipes: Chocolate Crinkles, Snickerdoodle, Peanut Butter Blossoms, Oatmeal Cookies, Sugar Cookie with Icing and classic Chocolate Chip.

Why you’ll love these monster cookies:

PERFECT MASHUP OF FLAVORS – the perfect combination for an all-star cookie with peanut butter, oatmeal, chocolate chips, and M&Ms. Or add your favorite candies into the cookie.

SOFT & CHEWY – personally I hate hard, crunchy cookies. So I worked hard to perfect this soft and chewy texture even at high altitude.

QUICK & EASY – no need to make these cookies hour ahead of time and let them chill, instead simply mix together in a bowl with a fork and pop them in the oven.

8 high altitude monster cookies on a silver serving tray with M&Ms scattered beside the tray

Recommended tools:

LARGE BOWL – no need for a stand mixer or electric mixer, this recipe is easy to mix together in a bowl with a fork. Find my absolute favorite mixing bowl set in the link below.

MEASURING CUPS & SPOONS – baking is sort of like a science, especially at high altitude, so it does require specific measurements of ingredients

1.5 TABLESPOON COOKIE SCOOP – I have found this cookie scoop makes the perfect cookie size. Find my favorite cookie scoop in the link below.

Check out all of my favorite kitchen products!

High Altitude Monster Cookie Ingredients:

BUTTER – I use salted and unsalted butter interchangeable in this recipe without difference in the taste. The butter needs to be softened (not melted), so just pop the butter in the microwave for a few seconds until it’s nice and soft.

BROWN SUGAR & WHITE SUGAR – a cookies isn’t good unless it has the perfect amount of sweetness

LARGE EGG & WATER – these help add moisture and hold the cookie dough together

SALT & VANILLA EXTRACT – both help to enhance all the yummy flavors (a little secret of mine…vanilla is the one ingredient I never measure when I’m baking)

ALL PURPOSE FLOUR & INSTANT OATS – the base that creates the soft and chewy cookie

BAKING SODA – the leavening agent for the cookies. ALWAYS measure accurately, especially at high altitude.

CREAMY PEANUT BUTTER, CHOCOLATE CHIPS, & M&Ms – the explosion of flavors

all the ingredients for monster cookies in glass bowls

Overview- How to make High Altitude Monster Cookies:

  1. MIX BUTTER, SUGARS, EGG, WATER, & VANILLA – mix until smooth and creamy
  2. ADD IN FLOUR, SALT, BAKING SODA, & PEANUT BUTTER – mix until a smooth batter forms
  3. ADD IN OATMEAL, CHOCOLATE CHIPS, & M&Ms – mix until all ingredients are combined evenly
  4. BAKE AT 350 DEGREES F FOR 13-14 MINUTES – ENJOY!!
high altitude monster cookie batter mixed together in a large mixing bowl with a fork

Save this recipe on Pinterest!

high altitude monster cookies pinterest graphic

Other high altitude recipes:

High Altitude Breakfast Recipes

High Altitude Bread Recipes

High Altitude Dessert Recipes

High Altitude Monster Cookies Recipe – Soft & Chewy

Soft and chewy High Altitude Monster Cookies filled with peanut butter, quick oats, chocolate chips, and colorful M&Ms. 
Print Pin Rate
Course: Dessert
Cuisine: American
Keyword: high altitude monster cookies, monster cookies
Prep Time: 5 minutes
Cook Time: 14 minutes
Servings: 34
Author: Rebekah S.

Equipment

  • 1 large mixing bowl
  • 1 large cookie sheet
  • 1 1.5 tablespoon cookie scoop

Ingredients

  • ¾ cup butter softened
  • 1 cup brown sugar
  • ½ cup white sugar
  • 1 large egg
  • ¼ cup water
  • 1 tsp vanilla extract
  • 1 ½ cup flour
  • 1 tsp salt
  • ½ tsp baking soda
  • ¾ cup creamy peanut butter
  • 2 cups instant oats
  • ¾ cup M&Ms
  • ¾ cup chocolate chips

Instructions

  • Preheat oven to 350 ℉
  • Mix softened butter, brown sugar, white sugar, egg, water, and vanilla together until smooth and creamy.
  • Add in flour, salt, baking soda, and peanut butter until a smooth dough forms.
  • Add in oatmeal, chocolate chips, and M&Ms.
  • Place cookie dough balls 2 inches apart of cookie sheet.
  • Bake for 13-14 minutes. Cool on the cookie sheet for 5 minutes then move to cooling rack.
  • Enjoy!

Notes

If making these monster cookies at sea level use 1 cup of all purpose flour instead of 1 1/2 cups. 

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