These bars are a bit tart, sweet, and full of berry flavor. Please see the notes at the end for variations. Thise recipe was adapted from America’s Test Kitchen.

Difficulty: Beginner Prep time 20 mins Cook time 45 mins Rest time 1 hr Total time 2 hrs 5 mins
Servings: 16


Homemade jam




  1. Cook

    Add the berry puré, sugar, salt, and cornstarch (mixed with a tsp of water) to a small pot. Do not stop stirring, and boil until it thickens. pour into a container to cool while making the cookie mixture.


  1. Gather ingredients. Preheat oven to 180°C (350°F).
  2. Line baking pan (20cm x 20cm) with aluminum foil. It would be best to use two layers.
  3. Chop walnuts
  4. Dry ingredients

    Mix flour, oatmeal, salt, baking soda, both sugars and walnuts until combined.

  5. Butter

    Add the butter and mix until well combined.

  6. The base

    Put 2/3 of the cookie mixture in the pan and press down with your hand or spatula for the bottom layer.

  7. Bake

    Bake until slightly browned, around 20-25 minutes. 

  8. Jam

    Cover the bottom layer (right out of the oven) with the jam.

  9. Topping

    Use the rest of the cookie mixture for the topping, making an even layer.

  10. Bake

    Bake for 15-20 minutes or until the jam is beginning to boil on the sides and the topping is beginning to brown. Cool for at least an hour and a half before removing from the pan. Cut into bars and serve. Store in a sealed container.


You can change the filling. Strawberry or raspberry puré are also good options. However, it would be best to add the sugar to the jam in parts since the amount may vary.

The original recipe uses standard jam. If you want to use that, try to find a jam that is a bit tart to have the natural flavor of the berry come through. Otherwise, you can add a tsp of lime juice and mix well before putting on the hot cookie mixture. It is not necessary to follow the first section (Jam - cooking with cornstarch).

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