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Oatmeal Brownies

The recipe makes the most of a handy packaged brownie mix, so they're fast to fix. If you don't have the mini M&Ms, use chocolate chips instead. Our kids love these rich fudgy squares with a scoop of ice cream.—Jennifer Trenhaile, Emerson, Nebraska
  • Total Time
    Prep: 15 min. Bake: 25 min. + cooling
  • Makes
    5 dozen


  • 1-1/2 cups quick-cooking oats
  • 1 cup M&M's minis
  • 1/2 cup all-purpose flour
  • 1/2 cup packed brown sugar
  • 1/2 cup chopped walnuts
  • 1/2 teaspoon baking soda
  • 1/2 cup butter, melted
  • 1 package fudge brownie mix (13-inch x 9-inch pan size)


  • In a large bowl, combine the oats, M&M's, flour, sugar, walnuts, baking soda and butter. Set aside 1 cup for topping. Pat the remaining mixture into a greased 15x10x1-in. baking pan.
  • Prepare brownie batter according to package directions. Spread over the crust. Sprinkle with the reserved oat mixture.
  • Bake at 350° for 25-30 minutes or until a toothpick inserted in the center comes out clean. Cool on a wire rack. Cut into bars.
Nutrition Facts
1 each: 116 calories, 6g fat (2g saturated fat), 15mg cholesterol, 66mg sodium, 14g carbohydrate (8g sugars, 1g fiber), 2g protein.

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Average Rating:
  • Susan
    Sep 23, 2019

    Excellent for potlucks as it makes people thrill you did more with than you really did. I also use a 9x13 and adjust the cooking time, and using a toothpick to check for when it’s done. I also like to play with the chocolate pieces-chocolate chips, holiday m

  • homemadewithlove
    Jun 5, 2017

    Easy and nice for a potluck or bake sale. Have used holiday M&Ms as well.

  • alfoa
    Aug 11, 2016

    Didn't seem like anything special. They were easy to make, but were just ok.

  • mamaknowsbest
    Jan 16, 2015

    This is a big hit at our local volunteer fire department! After the first batch, it was immediately requested again. Now, I make two batches. However, I make two trays of brownies and only use one batch of oat topping and sprinkle over the top of the two trays. Elimating the bottom layer. Quick, easy and upgrades brownies to a new level of crunch. It is a winner!

  • Launa R
    Jun 27, 2014

    I made these for company and everyone loved them.

  • coffeeandcake
    Jan 30, 2014

    I liked the ease of the recipe by using a boxed brownie mix. Next time I think I will try putting all the oat mixture on the bottom- as I would have liked that layer thicker.

  • 1956kris
    Jan 27, 2014

    Delicious and easy! I used dark chocolate M&M's and did not add nuts as these were for a church dinner. Will make them again.

  • jean413
    Jan 24, 2014

    These were real easy to make . Everyone from 7 yrs old kids to my 93 yr old father in law loved them

  • quiltycat2
    Jan 24, 2014

    These were moist and delicious. Served for desert with friends. They were a hit!

  • Karen965
    Jan 24, 2014

    These were Great. I used a regular sized cake pan and regular M&M's and they turned out really good. I will make these again!