Oat Aggregate Cookies

A story goes with these cookies… In February 1979 the Cal Poly Construction Engineering students (known as ConE’s) held their 2nd Annual Bake-Off competition. Rosie (a Home Ec student at the time) thought it was a scam — free cookies and a date with the judges, oh riiight! But the night before the contest she whipped up these cookies. The mixture of dried fruit, nuts and coconut in the cookies inspired the name, since ConE’s should know about aggregate concrete (a mixture).  Her recipe ‘officially’ placed 3rd in the most original category, and her blind date for the bake-off winners’ dinner was ConE Bernie Mark. He says she won 1st place. He’s right!  xoxo Rosie 🙂

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5 from 1 vote

Oat Aggregate Cookies

The grated orange zest and cinnamon make this cookie distinctive.  Add or subtract the nuts and dried fruit to your own liking.  I've made a few changes to my original recipe. We prefer them less sweet now, and the bake time is longer than I'd written on the recipe card circa 1979.
Course Dessert
Prep Time 20 minutes
Cook Time 15 minutes
Total Time 30 minutes
Servings 4 dozen
Author Rosie's Kitchen


  • 1 cup butter, softened
  • 1 cup packed brown sugar
  • 1/2 cup granulated sugar
  • 2 large eggs
  • 2 tsp grated orange zest
  • 2 tsp cinnamon
  • 1 tsp baking soda
  • 1 tsp vanilla
  • 1/4 tsp salt
  • 1 cup all-purpose flour
  • 1/3 cup wheat germ* ok to omit if you don't have
  • 3 cups old-fashioned oats
  • 1 cup chopped walnuts
  • 1 cup chocolate chips
  • 3/4 cup raisins
  • 3/4 cup chopped dried apricots
  • 1/2 cup shredded unsweetened or sweetened flaked coconut


  • Preheat oven to 350F. Beat butter and sugars until creamy. Beat in eggs, orange zest, cinnamon, baking soda, vanilla and salt.
  • Mix in flour and wheat germ until well combined. Gradually stir in oats and remaining ingredients.
  • Scoop onto ungreased or parchment lined baking sheets. Bake about 15 minutes, or until edges are golden brown. Cool on pan 2 minutes. Remove cookies to wire racks to cool completely.

                         We changed, the cookies didn’t!   


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