Red Fruit and Oat Crumble Squares

Red Fruit and Oat Crumble Squares is a easy French recipe that serves 12. 283 calories per serving. Recipe by JustInCooking on YouTube.

Prep: 55 min | Cook: 55 min | Total: 2 hrs 5 min

Cost: $7.21 total, $0.60 per serving

Ingredients

  • 250 g All-purpose flour (Sift before use)
  • 100 g Almond powder (Adds moisture and almond flavor)
  • 80 g White sugar
  • 5 g Baking powder (About 1 teaspoon)
  • 2 g Salt (A pinch)
  • 1 unité Lime zest (Finely grated)
  • 100 g Cold butter (Cut into small dice)
  • 1 unité Egg (Large egg, at room temperature)
  • 100 g Oat flakes (Large or medium flakes)
  • 30 ml Honey (To coat the oat flakes)
  • 15 ml Lemon juice (Fresh, about the juice of one lemon)
  • 10 g Cornstarch (Maïzena) (About 1 tablespoon)
  • 50 g Brown sugar
  • 300 g Mixed red berries (fresh or frozen) (Raspberries, strawberries, blueberries, currants…)
  • 10 g Powdered sugar (To dust before serving)

Instructions

  1. Mix dry ingredients

    In a large bowl, pour the flour, almond powder, white sugar, baking powder, salt and grated lime zest. Mix thoroughly until everything is homogeneous.

    Time: PT5M

  2. Incorporate the cold butter

    Add the cold butter cut into dice. Work with your fingertips like a crumble until you obtain a coarse sandy texture.

    Time: PT5M

  3. Form the dough

    Make a well in the center, add the egg and mix quickly by hand until you obtain a homogeneous dough ball that detaches from the sides of the bowl.

    Time: PT3M

  4. Divide the dough

    Weigh the total dough (about 510 g). Reserve 330 g for the base and 180 g for the crumble. Form small logs with the 180 g and place them in the refrigerator.

    Time: PT5M

  5. Crumble the logs

    Take the dough logs out of the refrigerator and crumble them coarsely with your fingers to obtain the crumble.

    Time: PT5M

  6. Prepare the oat‑honey mixture

    In a bowl, mix the oat flakes with the honey until the flakes are well coated.

    Time: PT3M

  7. Prepare the red fruit filling

    In a glass bowl, whisk the lemon juice with the cornstarch until dissolved. Add the brown sugar and whisk again. Incorporate the red berries and gently stir to coat them.

    Time: PT5M

  8. Line the pan with shortcrust pastry

    Place the 20 cm tart pan on a sheet covered with a silicone mat. Spread the 330 g of dough on the bottom of the pan, pressing with your hands to obtain an even thickness.

    Time: PT5M

  9. Chill in freezer

    Place the pan with the dough in the freezer for 20 minutes to firm up the base.

    Time: PT20M

  10. Add the fruit filling

    Remove the pan from the freezer, spread the red berries evenly over the shortcrust pastry.

    Time: PT2M

  11. Add the crumble and oat‑honey mixture

    Sprinkle the crumbled crumble over the fruit, then distribute the oat‑honey mixture on top.

    Time: PT2M

  12. Preheat the oven

    Preheat the fan‑forced oven to 180 °C.

    Time: PT10M

    Temperature: 180°C

  13. Bake the crumble squares

    Place the pan in the oven and bake for 40 to 45 minutes, until the top is nicely golden.

    Time: PT45M

    Temperature: 180°C

  14. Cooling

    Let the cake warm in the pan for about 1 hour before unmolding.

    Time: PT60M

  15. Unmold, cut and serve

    Carefully remove the pan, cut the cake into squares with a sharp knife and dust with powdered sugar before serving.

    Time: PT5M

Nutrition Facts

Calories
283
Protein
6 g
Carbohydrates
35 g
Fat
12 g
Fiber
3 g

Dietary info: vegetarian, contains nuts, contains gluten, low-calorie

Allergens: gluten, nuts, dairy, egg, honey

Last updated: March 17, 2026

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Red Fruit and Oat Crumble Squares

Recipe by JustInCooking

Indulgent squares made of a shortcrust pastry, a layer of lightly tart red fruits and a crunchy oat and honey crumble. A simple recipe, ideal for a summer dessert or an elegant snack.

EasyFrenchServes 12

Shop all ingredients on Amazon in one click • Printable PDF with shopping checklist

Source Video
2h 15m
Prep
45m
Cook
22m
Cleanup
3h 22m
Total

Cost Breakdown

$7.21
Total cost
$0.60
Per serving

Critical Success Points

  • Dough formation (step 3)
  • Even lining of the base (step 8)
  • Baking until golden (step 13)

Safety Warnings

  • Handle the hot oven – use kitchen gloves.
  • Raw egg may contain bacteria; bake the cake until fully cooked.
  • Use a sharp knife to avoid cuts.

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