This Old Fashioned Monster Cookie recipe is inspired by a love of eating. I also have Soft Batch Monster Cookies you will love!

Old Fashioned Monster Cookies!

I wish I had some awesome story about how my grandma made them in 1942, but yeah. It was just me tinkering away in my kitchen and putting together what I envisioned an old fashioned cookie would be like.

Old Fashioned Monster Cookies!

Seems like that today cookies are all ooey gooey and soft and loft-house style and not the crispy flakey cookies I remember as a kid.

I cannot believe I am old enough to have eaten old-fashioned food.  Old enough to want to eat old-fashioned food.

It makes sense though.  My favorite TV show is Murder, She Wrote.

Old Fashioned Monster Cookies!

Recipe based on Oatmeal Cranberry Cookies.

Tips for Success:

These cookies spread out considerably so I would press them flat(er) as you set them on the baking sheet.

If you want a higher dough to chip ratio (less chips, more cookie dough), cut the chocolate chips out and decrease peanut butter to 1/2 cup.

Make sure you cream the shortening and sugars until fluffy.  I have used both the whisk attachment and paddle and both seem to work well.

I love making these cookies into “giant” cookies, about 6-inches across.  They hold up very well and kids are absolutely giddy at the idea of the huge cookie.

Old Fashioned Monster Cookies!

These cookies are best served right out of the oven with a tall glass of cool milk! #da

Old Fashioned Monster Cookies!
5 from 1 vote

Old Fashioned Monster Cookies

Prep Time 10 minutes
Cook Time 12 minutes
Total Time 22 minutes
These Old Fashioned Monster Cookie recipe is inspired by a love of eating.


  • cups all-purpose flour
  • 1 cup peanut butter chips
  • 1 cup M&M's
  • cups whole oats
  • ¾ cup granulated sugar
  • ¾ cup brown sugar
  • ¾ cup shortening
  • 1 teaspoon McCormick® vanilla
  • 2 large eggs
  • 1 teaspoon McCormick® cinnamon
  • 1 teaspoon salt
  • 1 teaspoon baking powder
  • 1 teaspoon baking soda
  • ½ cup semi-sweet chocolate chips


  • Heat oven to 350°F.
  • In medium bowl sift flour, baking soda, baking powder, salt and cinnamon. In stand mixer or large bowl, cream together shortening, brown sugar, and white sugar until fluffy.
  • Add eggs and vanilla. Combine well.
  • Add flour mixture to wet ingredients and stir until just combined. Then add oats, M&M's, peanut butter chips and chocolate chips.
  • Use ¼ cup and scoop onto cookie sheet, you should get about 6 per sheet.
  • Bake for 8-12 minutes.

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Meet Amanda Rettke

Amanda Rettke is the creator of I Am Baker, and the bestselling author of Surprise Inside Cakes: Amazing Cakes for Every Occasion – With a Little Something Extra Inside.Over the course of her 15+ year blogging adventure, she has been featured in and collaborated with the Food Network, New York Times, LA Times, Country Living Magazine, People Magazine, Epicurious, Brides, Romantic Homes, life:beautiful, Publishers Weekly, The Daily Mail, Star Tribune, The Globe and Mail, DailyCandy, YumSugar, The Knot, The Kitchn, and Parade, to name a few.

Reader Comments

  1. Girl there is no need to have a story other than “I love to eat” when you make cookies as perfect as these.

  2. your kids will be baking these .. and your kids’ kids. . so don’t fret . . YOU will be the awesome story that your kids tell to their children and pass down your fabulous recipes. . monster cookies and all!!! 🙂

  3. I love that your favorite show is Murder, She Wrote! Ha ha. These cookies look delish. The tips for success are always so helpful!

  4. I’ll be old fashioned with you – we’re monster twinsies today. Love these – they look perfect!

  5. These cookies look soo good Amanda! Oats improve any cookie, I feel. And I agree on Murder she wrote – awesome show!

  6. Old fashioned just means they’re delicious enough to stick around through the years. Own it! They’re perfect!

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