Triple Berry Slab Pie

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Triple Berry Slab Pie is made from a buttery, flaky homemade crust topped with a strawberry, blueberry, and raspberry filling then is finished off with strips of pie crust sprinkled with coarse sugar.

A plate with a slice of slab pie with lattice topping and two forks on the plate.

This post is sponsored in conjunction with #SpringSweetsWeek. I received product samples from sponsor companies to help in the creation of the #SpringSweetsWeek recipes. All opinions are mine alone.

I like making pies.   I find that they aren’t too hard to make and people love them, especially at the holidays.

One thing I’ve never made is a slab pie.  I’ve just never been interested in doing it because it looks like there isn’t that much filling in the pie.  However, I decided it was high time I try one.

I decided to make a triple berry slab pie with strawberries, blueberries, and raspberries but you can really use any combination of berries you’d like.  I also decided to make my own crust since the refrigerator ones wouldn’t fit the size of my pan.


  • shortening
  • salted butter
  • flour
  • salt
  • almond extract paste
  • ice water
  • frozen berries
  • sugar
  • cornstarch
  • orange
  • egg
  • milk
  • coarse sugar

To Make the Pie Crust:  In a large bowl combine the butter and shortening with the flour and salt.  Add the almond extract paste and ice water until a dough forms. Knead for 2 minutes then separate into two disks.  Wrap and refrigerate.

To Make the Filling:  Combine the berries, sugar, cornstarch, and juice from an orange in a medium saucepan over medium heat.  Simmer for 4-5 minutes, stirring occasionally, then remove from heat and cool completely.

To Make the Pie:   Roll out one pie crust and press it into a 10 x 15 inch jelly roll pan.  Spoon the filling on top of the crust.  Roll out the other crust, cut into strips, and lay diagonal on top of the pie.  Bake at 375 degrees for 35-40 minutes.

Pin Collage: A plate with a slice of slab pie with lattice topping and two forks on the plate, text, a cutting board with a cup of flour, a cup of sugar, a stick of butter, a stick of shortening, and a container of almond paste.

To make a slab pie you don’t need a pie pan, you use a cookie sheet with sides on it, also called a jellyroll pan.  I used a good sturdy one from Anolon.   It’s the perfect size and the rubber grips on the size of the pan made it easy for me to pull it out of the oven without disturbing the filling in the pie.

Making the filling I used a bunch of frozen berries, Dixie Crystals sugar, a bit of orange juice, and some corn starch to thicken it up.   Once it’s been cooked you need to let it cool before pouring on to the pie crust or else it will melt the crust and make a big mess.

What is a slab pie?

A slab pie is a pie the fits inside a jelly roll pan or a shallow rectangular baking pan.  It is cut into squares and can feed more people than a traditional pie.  Slab pies are also easy to transport.  They are good at room temperature or served warm.  They can be single crust or double crust and can be served plain or with whipped cream or ice cream.

Can I use different berries?

Yes!  You can use any combination of strawberries, blueberries, raspberries, blackberries, or even cherries.  Just make sure you have the right amount of fruit to prepare the filling.  I wouldn’t use any other fruit besides these five but if you want to experiment you can.

A cutting board with a bag of sugaar, a bowl of frozen berries, and an orange.

Why do I have to chill the pie crust?

This recipe calls for the pie crust dough to be chilled for 3 hours.  However, if you are in a hurry you can chill it for just one hour and it will still be fine.  Three hours will just be better because chilling the dough hardens the fat which helps the crust maintain it’s structure while it bakes.  It also allows the gluten in the flour to relax which will result in a more tender pie crust and less shrinkage of the dough.

Do I have to make the pie crust from scratch?

You really do in this recipe.  In order for the crust to fit in a rectangular pan you need to make it and roll it out on your own.  If you have your own pie crust recipe you would prefer to use go ahead and do it!   Just know you’ll need more than you traditionally would for a double crust pie because of the size of this pan.

I hate making pie crust from scratch.  I do it whenever I’m selling my pies and I do it if I’m making the pie for a special occasion but otherwise I will buy a refrigerated pie crust and use that because I find they work just as well.

My main issue with pie crust is that it’s often pretty delicate, falls apart, and then I end up rolling it out multiple times and it gets warm and sticks to everything.  It’s just a mess.

While this pie crust gave me a little bit of trouble it wasn’t as bad as I anticipated and it was worth the effort.  This is probably the flakiest crust I’ve ever made!   I had some trouble with the strips on top but it didn’t matter that they broke, the finish pie still looked great!

A jelly roll pan with homemade crust for a pie.

The crust is made with both shortening and butter.  The shortening helps to give it the flakiness while the butter makes it tender and tasty.  I added a bit of Taylor & Colledge almond extract paste and my did it elevate the flavor!

More Pie Recipes:

To make the pie I rolled out half the dough and flipped it into the bottom of the pan.  Then I topped it with the cooled berry mixture.   Finally I rolled out the other half of the dough.

Using a pastry cutter I cut long strips to put on top of the pie.   Some of them broke apart because of how delicate the dough is but it didn’t matter.  I just lay pieces together so they looked like they were almost one piece and they baked up fine.

This pie was incredible.  The crust was probably my favorite pie crust ever.  It was flaky and buttery and had hints of almond in it.

The filling tasted like berries and was sweet but not overly sweet.   The pie crust strips on top with crisp and flaky.  I put coarse sugar on top which added more crunch and a bit of sweetness.

We had this pie when company came over and it fed plenty. It would be a great pie to make for a party because it serves a lot more than a traditional pie.

A jelly roll pan with a berry slab pie with lattice top and a spatula in the pan.

If you’ve tried my Triple Berry Slab Pie or any other recipe on Hezzi-D’s Books and Cooks please take a minute to rate the recipe and leave a comment letting me know how you liked it. I love hearing from you! You can FOLLOW ME on:

A plate with a slice of slab pie with lattice topping and two forks on the plate.

Triple Berry Slab Pie #SpringSweetsWeek

Yield: 15 squares
Prep Time: 1 hour
Cook Time: 40 minutes
Total Time: 1 hour 40 minutes

A tasty pie made from a buttery, flaky homemade crust
topped with a triple berry filling finished off with strips of pie crust sprinkled with coarse sugar.


  • 1 c. shortening (or baking sticks) chilled and cubed
  • 1/2 c. (1 stick) salted butter, chilled and cubed
  • 3 3/4 c. flour
  • 1/2 teaspoon salt
  • 3/4 teaspoon almond extract paste
  • 5-10 Tablespoons ice water
  • 32 oz. frozen berries (I used strawberries, raspberries, and blueberries)
  • 1/2 c. sugar
  • 2 Tablespoons cornstarch
  • 1 orange, juiced
  • 1 egg
  • 1 Tablespoon milk
  • coarse sugar (optional)


  1. In a large bowl combine the shortening, butter, flour, and salt. Mix together with your fingers or a pastry blender until a coarse mixture results.
  2. Add in the almond extract paste and 2 tablespoons of ice water and mix well. Continue adding 1 tablespoon of water then mixing until a crumbly dough forms.
  3. Knead the dough for 2-3 minutes then divide in half. Wrap each half in plastic wrap and refrigerate for at least 3 hours.
  4. To make the filling combine the frozen berries, sugar, cornstarch, and orange juice in a medium sauce pan. Bring to a simmer and cook for 5 minutes, stirring occasionally. Remove from heat and cool completely.
  5. Preheat the oven to 375 degrees. Remove one dough round from the refrigerator and place between two pieces of parchment paper. Roll into a 13 x 18 rectangle. Remove the top parchment and gently flip the dough into a 10 x 15 jelly roll pan. Remove the parchment and gently press into the pan.
  6. Pour the filling into the pan on top of the bottom crust. I did not need to use all of the filling.
  7. Remove the second pie crust and place between two sheets of parchment. Roll out to 10 x 15 inch rectangle. Cut into one inch thick strips. I used a pastry cutter to make the edges pretty but you can just use a knife.
  8. Place 5 strips going diagonal one way and then 5 strips going diagonal the other way. If the strips break because of how thin they are simply press back together. Many of mine broke.
  9. In a small bowl combine the egg and milk. Brush on top of the pie strips. Sprinkle liberally with coarse sugar.
  10. Bake for 35-40 minutes or until the top is golden brown. Remove from oven and cool completely.
  11. Cut into 15 squares.


Recipe adapted from Lovely Little Kitchen

A jelly roll pan with a berry slab pie with lattice top.

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  1. I love this! Great for parties, summer BBQs! Plus holidays since you can use frozen berries when fresh isn’t in season.

  2. Ooh, I’ve never had slab pie before and yours looks fantastic. I will cheat and buy crust though, I just do not have the touch to make it from scratch!

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