Classic Apple Walnut Slab Pie

The iconic scent of grandma's kitchen. This cake marries a crumbly shortcrust pastry with a juicy filling. The secret lies in the fat-rich dough, which 'melts' in your mouth because the fat coats the flour particles, preventing a tough gluten network from forming.
🕒 Prep Time 30 mins
🍳 Cook Time 40 mins
Total Time 1 hr 20 mins
🍽️ Servings 12 servings
🔥 Calories 320 kcal
🌍 Cuisine Hungarian-Style

Ingredients

Equipment Needed

  • Baking Pan (9x13 inch)
  • Rolling Pin
  • Large Bowl

Allergen Information

⚠️ Wheat
⚠️ Milk
⚠️ Egg
⚠️ Tree Nuts (Walnuts)

Instructions

1

Mix grated apples with sugar and cinnamon, let sit for 15 minutes, then squeeze out the juice.

Tip: If you leave the juice, it will make the dough soggy. Drink the juice; it's full of vitamins!
2

Crumble flour, baking powder, powdered sugar, and salt with cold butter using your fingers quickly.

Tip: It's crucial the butter doesn't melt from your hand warmth, or the dough loses its flake.
3

Add egg and sour cream, knead until it comes together. Divide into two parts (one slightly larger for the bottom).

Tip: Don't overwork it, or the dough will become tough.
4

Roll out the bottom sheet and place in the pan. Sprinkle with ground walnuts.

Tip: The walnuts act as a barrier to protect the crust from the apples.
5

Spread the squeezed apples over the walnuts.

6

Roll out the top sheet, place over apples. Prick with a fork in several places.

Tip: Steam escapes through the holes, preventing the top from bubbling or cracking.
7

Brush with egg wash (optional) and bake at 350°F (180°C) for 35-40 minutes until golden.

Recipe FAQ

Why does the dough crack?
The butter is too cold or there's too little liquid. Let it warm up slightly or add a spoonful of sour cream or water.
Why is the bottom soggy?
Sprinkle breadcrumbs or ground walnuts on the bottom crust before adding filling; this absorbs the apple juice.

Ingredients

  • 3 1/4 cups All-Purpose Flour
  • 1 cup Cold Butter
  • 1/2 cup Powdered Sugar
  • 1 large Egg
  • 2 1/2 tsp Baking Powder
  • 1 tbsp Sour Cream (for dough)
  • 1 pinch Salt
  • 2.2 lbs Tart Apples (peeled, grated)
  • 1 cup Ground Walnuts
  • 1 tbsp Cinnamon
  • 3 tbsp Sugar (for filling)