Easy Mixed Berry Crumble Slab Pie

Follow our step-by-step guide on how to make Easy Mixed Berry Crumble Slab Pie.

1. Step 1

   Begin by preheating your oven to a cozy 375°F (190°C).

2. Step 2

   While the oven warms up, lightly dust an 11x15-inch half-sheet pan with flour.

3. Step 3

   Gently lay the two pie crusts into the pan, stretching and trimming them to snugly fit the bottom and sides.

4. Step 4

   In a large mixing bowl, toss together the frozen mixed berries, granulated sugar, arrowroot powder, and a pinch of salt, stirring until everything is beautifully combined.

5. Step 5

   In a separate medium bowl, blend oats, flour, brown sugar, apple pie spice, and a dash of salt.

6. Step 6

   Use a pastry cutter to work in the butter until the mixture resembles a delightful assortment of small, uneven crumbs.

7. Step 7

   Now, spread the luscious berry mixture evenly over the pie crust in the pan, and generously sprinkle the crumble topping on top.

8. Step 8

   Slide the pan into your preheated oven and bake for 45 to 55 minutes, or until the topping turns a lovely golden brown and the filling bubbles with excitement.

9. Step 9

   Once baked, let it cool for 30 to 45 minutes before indulging in this berry bliss.

10. Step 10

    For an extra touch, serve with a scoop of vanilla ice cream for a delightful contrast!.