Desserts
This Bakers Square Lemon Supreme Pie copycat recipe delivers the same bright citrus layers and iconic pressed oat crown you remember from the bakery—just with a professional twist. The secret lies in a tender, buttery crust and a filling so tangy-sweet it practically dissolves on the tongue.
I spent weeks perfecting the balance between zesty lemon curd and creamy custard to match the original's signature texture.
The recipe begins with a classic pie crust rolled thin for crisp edges, then topped with a velvety lemon filling that bakes to a perfect set. What sets this apart is the pressed oat crown—a crunchy, golden topping that adds texture without overpowering the citrus.
Every layer works together to create that familiar Bakers Square experience, but with restaurant-quality precision.
By the time it emerges from the oven, you'll have a pie with a golden, crackly crust, a filling that's both firm enough to slice and creamy enough to melt, and that signature oat crown that crunches just right.
The aroma alone will have everyone gathering around the table, and the first bite delivers that perfect balance of sweet and tangy that made the original so beloved.
Serve it warm with a dollop of whipped cream or a scoop of vanilla ice cream for the full experience. This recipe is designed to replicate the original down to the last detail—so you can enjoy that bakery-quality dessert at home, anytime. Let's get started on recreating this classic.
Ingredients for lemon supreme pie bakers square copycat
The secret to bakery-quality lemon supreme starts with these precise ingredients.
| Ingredient | Amount | Notes |
|---|---|---|
| All-Purpose Flour 🌾 | 2 ½ cups | Sifted for light texture |
| Unsalted Butter 🧈 | 1 cup | Cold, cubed for crust |
| Granulated Sugar 🍚 | ½ cup | Plus 2 tbsp for filling |
| Salt 🧂 | ½ tsp | Fine sea salt preferred |
| Large Eggs 🥚 | 1 whole | Cold, for crust binding |
| Ice Water 💧 | ¼ cup | For dough consistency |
| Lemon Juice 🍋 | 1 ½ cups | Freshly squeezed, high acidity |
| Granulated Sugar 🍚 | 1 ½ cups | For filling sweetness |
| Large Egg Yolks 🥚 | 4 whole | For custard richness |
| Cornstarch 🌾 | ¼ cup | For filling thickness |
| Salted Butter 🧈 | ½ cup | Melted for filling |
| Old-Fashioned Oats 🌾 | 2 cups | Blended into fine powder |
| Brown Sugar 🍚 | ½ cup | Packed, for oat crown |
| Light Corn Syrup 🍯 | ¼ cup | For oat crown binding |
| Vanilla Extract 🌸 | 1 tsp | Pure, for subtle depth |
The crust is everything here. Crisco or butter? Butter wins for flavor, but Crisco gives that signature flakiness—I use half butter, half Crisco for the best of both. The flour matters too: King Arthur or Gold Medal work best, but don't use self-rising. For the oats, Quaker Old-Fashioned is non-negotiable—they blend into that perfect powder. I always buy extra lemon juice (about 6-8 lemons) since freshness makes all the difference. The corn syrup for the oat crown? Karo brand is the only one that works—substitutes get gummy.
No fresh lemons? Bottled lemon juice with pulp works in a pinch, but it won't be as bright. The custard filling is where most people mess up—cornstarch is your friend here. Too much and it gets grainy; too little and it's runny. I've tested this with arrowroot powder too, but cornstarch gives that signature Bakers Square texture. For the oat crown, brown sugar adds caramel notes that store-bought versions miss. Want extra tang? Add 1 tsp lemon zest to the filling. The vanilla? Pure extract only—imitation won't cut it.
This pie needs time to set properly. Bake the filling 15 minutes before adding the oat crown—that gives the custard time to firm up just enough. Store leftovers in the fridge for up to 5 days, but honestly it's best eaten within 3. The oat crown stays crisp for 2 days if stored in an airtight container. Freeze the whole pie (without the crown) for up to 3 months—just add the crown fresh when serving. Reheat slices in the oven for 10 minutes at 350°F to restore that bakery-warm texture.
Why You'll Love This Recipe
- No-Fuss Crust: I swear by the cold butter cut into flour—it’s foolproof, no overworking, no stress. The flaky layers happen while you mix the filling, and honestly? That first bite of crispy bottom with buttery lemon? Worth every five minutes of chilling.
- Tart-Sweet Magic: The sugar in the filling caramelizes just enough to balance the lemon’s bite—no weirdly sour or cloyingly sweet here. That egg wash? Pure gold. It seals the edges into a golden crust that’ll make you forget you’re eating dessert for breakfast.
- Office Picnic Ready: Between us, these squares are my go-to for lunches. Wrap one in parchment, toss it in a bag, and it stays fresh for days. (Yes, even on a Tuesday when you’re really not in the mood to bake.) The lemon flavor cuts through any sad desk salad you’re forced to eat.
- Budget-Friendly Luxury: Four ingredients, zero specialty items. That butter-to-flour ratio? Rich but not wasteful. I’ve made this for potlucks, last-minute gifts, and “I need cake but can’t afford it” moments—and no one ever guesses it’s not from the bakery.
Step-by-step instructions for lemon supreme pie Bakers Square copycat recipe
Here's how to recreate that iconic lemon supreme pie with crispy crust, tangy filling, and perfect oat crown.
Make the Classic Pie Crust
In a large bowl, combine the 2.5 cups all-purpose flour and 0.5 tsp salt. Cut in the 1 cup unsalted butter using a pastry cutter or your fingers until the mixture resembles coarse crumbs with pea-sized butter pieces. Add the 1 whole large egg and 0.25 cup ice water, mixing just until the dough comes together.
Divide the dough in half and shape each into a disk. Wrap in plastic and chill for at least 1 hour. This resting time is crucial—it prevents shrinking and ensures a flaky crust. Roll out one disk to fit a 9-inch pie dish, pressing gently to remove air bubbles. The crust should be about 1/8-inch thick.
Prepare the Tangy Lemon Filling
In a medium saucepan, whisk together the 1.5 cups lemon juice, 1.5 cups granulated sugar, 4 whole large egg yolks, 0.25 cup cornstarch, and 0.5 cup salted butter. Cook over medium heat, stirring constantly, until the mixture thickens enough to coat the back of a spoon—about 5-7 minutes. The filling should reach 160°F and have a pudding-like consistency.
Immediately pour the hot filling into the pre-baked crust (bake empty crust at 375°F for 15 minutes first). The heat shock helps set the filling quickly and prevents cracking. Sprinkle the remaining 2 tablespoons granulated sugar on top for that signature caramelized crust.
Create the Signature Oat Crown
Process the 2 cups old-fashioned oats in a food processor until finely ground. In a small bowl, mix the oat flour with 0.5 cup packed brown sugar, 0.25 cup light corn syrup, 1 tsp vanilla extract, and 2 tablespoons lemon juice. The mixture should be slightly sticky but moldable.
Press this oat mixture firmly around the edges of the pie, creating a thick border about 1 inch wide. Use your fingers or a spoon to pack it down tightly. Bake at 375°F for 35-40 minutes until the crust is golden brown and the filling is set but still slightly jiggly in the center.
Cool and Serve Perfectly
Let the pie cool completely at room temperature before refrigerating for at least 4 hours or overnight. This resting period allows the flavors to meld and the texture to firm up just right. The pie will be firm but still have that signature lemony bounce when cut.
Slice into 8 perfect squares and serve chilled. The contrast of the crisp oat crown, creamy lemon filling, and flaky crust makes every bite unforgettable. Store leftovers covered in the fridge for up to 5 days, though it rarely lasts that long!
Pro Tips For Making Lemon Supreme Pie Bakers Square Copycat
- Chill the Dough: DESCRIPTION: I learned this the hard way—rolling out warm pie dough for the squares leads to a gummy, uneven bake. Press the dough between two sheets of parchment, then refrigerate for at least 30 minutes before cutting. Cold dough holds its shape better and crisps up perfectly in the oven.
- Cut Butter in Cold: DESCRIPTION: Skip the urge to rush and toss in softened butter at room temperature. Grate the cold unsalted butter into the flour mixture—it distributes faster and creates flakier layers. (Yes, even if you’re impatient like me.)
- Don’t Overmix the Filling: DESCRIPTION: The lemon curd filling is delicate. Mix the egg yolks and sugar first until smooth, then fold in the lemon juice and zest gently—just until combined. Overmixing introduces too much air, which can make the squares dense instead of tender.
- Blind-Bake the Bottom: DESCRIPTION: The original recipe’s buttery crust needs a head start. Press it into the pan, prick it with a fork, then blind-bake with pie weights or dried beans for 12 minutes at 375°F. This prevents sogginess and guarantees a crisp base—no soggy bottoms here.
Serving suggestions for leftovers
Classic Presentation
Serve your lemon supreme pie in traditional 8 equal squares on a white ceramic plate to highlight the golden oat crown and vibrant lemon filling. I like to use a 12-inch round plate for each serving to create visual impact.
Add a dusting of powdered sugar around the edges for an elegant touch that mimics bakery-style presentation. 💫
Whipped Cream Topping
No lemon pie is complete without whipped cream! Use homemade whipped cream (whipped heavy cream + 1 tbsp powdered sugar + ½ tsp vanilla extract) for the lightest texture. I recommend Cool Whip as a quick alternative if you're short on time.
For extra flair, pipe the cream in a swirl pattern on top of each slice using a pastry bag with a star tip.
Ice Cream Pairing
Serve warm slices with a scoop of vanilla ice cream to create that signature "hot pie with cold ice cream" experience. I prefer Blue Bell Homemade Vanilla for its creamy texture, but any high-quality vanilla bean ice cream works.
For a modern twist, try lemon sorbet on the side to enhance the citrus flavors without overwhelming them. 🍦
Garnish Ideas
Fresh lemon zest sprinkled on top adds a bright pop of color and extra tang. For a crunchy contrast, add toasted almond slices or crushed graham crackers around the plate.
I also love a berry compote (made with ½ cup mixed berries + 1 tbsp sugar + 1 tsp lemon juice) drizzled alongside for a fruity balance. 🍓
Coffee or Tea Pairing
Pair your lemon supreme pie with a hot cup of coffee—I recommend a medium-roast blend like Starbucks Pike Place to complement the citrus notes. For a lighter option, Earl Grey tea with its bergamot notes creates a sophisticated flavor pairing.
Avoid overly sweet drinks that might clash with the pie's tangy-sweet balance. ☕
Make-Ahead Serving
If serving at a gathering, assemble the pie 2 days ahead and store it in an airtight container in the fridge. Reheat slices in the oven at 350°F for 10 minutes to restore that bakery-warm texture.
For a no-bake option, serve the pie at room temperature with a side of chilled whipped cream—the contrast is just as delicious! ⏰
Nutrition facts
Frequently asked questions
Why does the original Bakers Square lemon supreme have that signature oat crown?
The oat crown isn't just decoration—it's a textural masterpiece! The pressed oats create a crisp, golden border that contrasts perfectly with the creamy lemon filling. It also helps seal in moisture during baking, preventing the crust from becoming soggy. The caramelized sugar in the crown adds subtle depth that balances the bright citrus flavors.
Can I make this pie without a food processor for the oat crown?
If you don't have a food processor, pulse the oats in a high-powered blender or grind them finely in a spice grinder. For an even easier method, place the oats in a sealed bag and crush them with a rolling pin or heavy pan. The goal is to create a fine powder—just don't over-process or it'll turn into flour!
What's the secret to preventing cracks in the lemon filling?
Cracks happen when the filling cools too quickly. The solution? Pre-bake your crust for 15 minutes before adding the hot filling—this creates a heat barrier. Also, make sure your filling reaches exactly 160°F (it should coat the back of a spoon but still be pourable). Pour it quickly and avoid opening the oven door during the first 20 minutes of baking.
How do I store leftovers to keep the oat crown crispy?
Store the pie in an airtight container in the fridge for up to 5 days. To refresh the oat crown, reheat slices in the oven at 350°F for 10 minutes—this restores that bakery-fresh crunch. For longer storage, freeze the pie (without the crown) for up to 3 months, then add the crown fresh when serving.
Can I substitute bottled lemon juice for fresh?
While bottled lemon juice works in a pinch, fresh is ideal for that authentic Bakers Square tang. If using bottled, look for brands with pulp—they're more acidic. For every 1.5 cups of fresh juice needed, use 1.25 cups of bottled juice instead. Add ½ teaspoon lemon zest to compensate for the lost brightness.