Peanut Butter Oatmeal Squares

I love oatmeal…. and peanut butter for that matter… so I thought, why not combine the two into a delicious lunch box snack.  This makes for a mostly healthy, moist square you are sure to enjoy!

You could add chocolate chips, or nuts, or raisins, or whatever you like to these squares but I just left them as is.



These are my ingredients.


I melted the margarine in the microwave on high heat in a medium bowl for about 40 seconds, until it was almost fully melted.  I added the peanut butter to the margarine and stirred to melt the peanut butter.


I added the peanut butter/margarine mixture into a big bowl with the remaining ingredients and stirred to fully combine the ingredients.


I poured the mixture into a parchment paper lined 9 x 13 baking pan.


And baked it at 350 degrees for about 45 minutes, until it was browned and cooked through.


I let it cool completely and then cut it into squares to add to the lunch boxes!



Peanut Butter Oatmeal Squares

Preparation Time: 5 minutes  Baking Time: 45 minutes  Servings: 24 squares


  • 1/2 cup butter/ margarine
  • 1 cup peanut butter
  • 3 cups rolled oats
  • 2 large eggs
  • 1 1/2 cups milk
  • 1/2 cup brown sugar
  • 1/2 cup white sugar
  • 2 tsp. baking powder
  • 1 1/2 tsp. salt
  • 2 tsp. vanilla


  1. Preheat oven to 350 degrees.  Line 9 x 13 baking pan with parchment paper.
  2. In small microwave safe bowl, melt margarine on high heat for about 40 seconds, until it’s almost fully melted.
  3. Stir peanut butter into melted margarine and stir until smooth.
  4. Add peanut butter mixture to a large bowl with remaining ingredients.
  5. Stir until fully combined.
  6. Pour mixture into prepared baking pan.
  7. Bake at 350 degrees for about 45 minutes, until fully browned and cooked through.
  8. Allow to cool before cutting into squares.


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