Sugar Pie Bars with Buttery Shortbread Crust

a trio stack of sugar pie squares on a white plate on top of a green dish cloth with a milk jug in the background

These Sugar Pie Squares are rich, buttery, gooey, and filled with deep brown sugar flavor. They have all the cozy sweetness of a classic sugar pie, but they are baked into easy dessert bars with a tender shortbread-style crust.

If you love caramel-like desserts, brown sugar bars, and simple homemade treats that taste far more impressive than they look, this recipe is one to save. Sugar Pie Squares may appear modest at first glance, but the flavor is wonderfully intense. The filling bakes into a soft, glossy layer that is sweet, creamy, and lightly chewy around the edges, while the crust gives every bite a buttery base that balances the richness beautifully.

This is the kind of dessert that proves you do not need candy, sprinkles, frosting, or complicated decorations to make something memorable. Because the ingredient list is simple, the quality of the ingredients really matters. Use good butter if you can, and choose pure vanilla extract for the best flavor. The vanilla and brown sugar are the heart of these bars, so letting those flavors shine makes a noticeable difference.

Sugar Pie Squares

I saved this recipe from a magazine some time ago, though I no longer remember which one it came from. What I do know is that it quickly became the kind of dessert worth making again. It is simple enough for an everyday baking project, yet special enough to serve for holidays, gatherings, potlucks, or whenever you want a sweet, comforting dessert.

a trio stack of sugar pie squares on a white lacy plate against a light pink background

The recipe begins with an easy crust made from pantry staples. You will need:

  • All-purpose flour
  • Granulated sugar
  • Salt
  • Cold, cubed butter
  • Pure vanilla extract

A food processor makes the crust especially quick. The flour, sugar, and salt are pulsed together first, then the cold butter and vanilla are added until the mixture forms coarse crumbs. After that, the crumbly mixture is pressed firmly into a parchment-lined baking pan and baked briefly. This short bake helps the crust set before the filling is added.

The filling is just as straightforward. Brown sugar, eggs, heavy whipping cream, melted butter, cornstarch, vanilla extract, and salt are whisked together until smooth. The heavy cream adds richness, while the cornstarch helps the filling thicken and hold its shape once the bars are chilled and sliced. Pour the filling over the warm crust, return the pan to the oven, and bake until the top is set with only a slight jiggle in the center.

Do not worry if the bars look bubbly around the edges or take on a deep caramel color. That is part of what makes these Sugar Pie Squares so delicious. The center should not be loose or sloshing in the pan, but a gentle wobble is fine. The most important step comes after baking: the bars must cool completely and chill for several hours. Waiting is difficult, but it allows the filling to set properly so you can cut clean squares.

The finished bars have a buttery shortbread crust and a gooey brown sugar filling that tastes like caramel, vanilla, and classic pie all in one bite. They are sweet, rich, and satisfying, so small squares go a long way. Serve them chilled or let them sit briefly at room temperature before serving if you prefer a softer texture.

Enjoy every sweet bite.

a plate of sugar pie squares on a light background with a milk bottle in the background

sugar pie squares stacked on a white plate and a green towel

Sugar Pie Squares

These Sugar Pie Squares are buttery, gooey brown sugar dessert bars with a tender shortbread crust and a rich caramel-like filling. They are simple to make, easy to slice, and perfect for anyone who loves sweet homemade bars.
Prep Time
6 hrs 10 mins
Cook Time
35 mins
Total Time
6 hrs 45 mins
Course:
Bars, Dessert
Cuisine:
Dessert
Servings:
16 squares

Equipment

  • Food Processor recommended

Ingredients

For the Crust:

  • cups all-purpose flour
  • 2 Tbsp granulated white sugar
  • 1/2 tsp salt
  • 1/2 cup unsalted butter, cold and cubed
  • 1 tsp pure vanilla extract

For the Filling:

  • cups light brown sugar, firmly packed
  • 2 large eggs, at room temperature
  • 1/4 cup heavy whipping cream
  • 3 Tbsp unsalted butter, melted and cooled
  • 2 Tbsp cornstarch
  • 2 tsp pure vanilla extract
  • 1/4 tsp salt

Instructions

  • Preheat the oven to 350°F. Line an 8-inch square light metal baking pan with parchment paper, allowing the parchment to extend over the edges of the pan. Lightly spray the parchment with cooking spray and set the pan aside.
  • Make the crust. In a food processor, combine the flour, sugar, and salt. Pulse just until mixed. Add the cold cubed butter and vanilla extract, then pulse until the mixture resembles coarse crumbs. Transfer the mixture to the prepared pan and press it into an even layer. Bake for 10 minutes, then remove the pan from the oven. Leave the oven on.
  • While the crust bakes, prepare the filling. In a large bowl, whisk together the brown sugar, eggs, heavy whipping cream, melted butter, cornstarch, vanilla extract, and salt until fully combined and smooth. Pour the filling evenly over the warm crust.
  • Bake for 25 to 30 minutes, or until the top is set and the center has only a slight jiggle. The filling should not move loosely in the pan. Bubbling edges and a deep golden-brown color are normal. Cool completely at room temperature, then cover with plastic wrap or foil and refrigerate for at least 4 to 6 hours, or until fully set. Slice into squares before serving.

Notes

Because this recipe relies on a short list of simple ingredients, higher quality butter and pure vanilla extract will help the buttery vanilla and brown sugar flavors stand out.

a closeup of a sugar pie square with a bite missing from it

These Sugar Pie Squares are a wonderful make-ahead dessert because they need time to chill before slicing. That makes them especially convenient when you want to prepare something sweet the day before serving. Once set, the bars slice neatly and hold their shape well, while still keeping that soft, gooey brown sugar filling.

For the best texture, keep the squares refrigerated until you are ready to serve them. The crust stays tender, and the filling remains rich and silky. If you love classic pie flavors but want an easier dessert to share, these brown sugar pie bars are a delicious choice.

Craving more sugar? Try another cozy dessert recipe.

a piece of chocolate peppermint chess pie topped with whipped cream and candy cane pieces on a white plate

Chocolate Peppermint Chess Pie

sugar pie squares photo collage

Have a super sweet day!

xo, Hayley