Co+op Basics: Chocolate Peanut Butter Oat Bars

We've got a big batch dessert recipe featuring Co+op Basics! These peanut butter bars are easy and delicious and sneak in some healthy rolled oats. This recipe makes a TON of bars - great for an on-the-go snack or light after-dinner dessert. The best part? It uses 7 different Co+op Basics products:


  • Bulk rolled oats
  • Bulk all-purpose flour
  • Field Day peanut butter
  • Westby butter
  • Field Day cane sugar
  • Feather Lane eggs
  • Kilgus milk
Bulk rolled oats
2 1/3 cup
Bulk all-purpose flour
1 1/2 cup
Baking powder
1 teaspoon
Field Day smooth unsalted peanut butter
1 cup
Westby butter, softened
1 cup
Field Day cane sugar
2/3 cup
Brown sugar
1 1/3 cup
Feather Lane eggs
1 teaspoon
1 teaspoon
Field Day smooth unsalted peanut butter
1 cup
Westby butter
1/2 cup
Kilgus whole milk
6 tablespoons
Cocoa powder
4 tablespoons
Powdered sugar
2 cups

Prep time: 15 minutes

Cook time: 30 minutes

Servings: 32 small bars

Calories per serving: 285

Cost per serving: $0.49


  1. Preheat oven to 375 degrees Fahrenheit. Line a rimmed half cookie sheet (13x18) with parchment paper.
  2. In a large bowl, combine oats, flour, baking powder, and salt.
  3. In another bowl, mix together peanut butter and softened butter. 
  4. Add sugar and brown sugar and cream together until smooth and light.
  5. Add eggs and vanilla and mix to combine.
  6. Add the dry ingredients to the wet ingredients. 
  7. Press the cookie dough into the sheet, spreading evenly.
  8. Bake for 20-25 minutes, until the middle is just set.
  9. Allow to cool for 5 minutes, then drop peanut butter dollops evenly over the top.
  10. Allow to sit for 1-2 minutes until the peanut butter starts to soften, then spread evenly over the top.
  11. In a medium-sized pot over medium heat, add butter, cocoa powder, and milk. Bring to a boil.
  12. Remove from heat and whisk in powdered sugar until smooth.
  13. Spread chocolate frosting over the top of the bars and spread in an even layer.
  14. Allow frosting to set and bars to cool completely before cutting into squares.