Pecan Pie Bars With a Shortbread Crust and a Filling That Won’t Crack

Pecan pie bars have a crisp shortbread base topped with a sticky, caramel-like pecan filling, and they are much easier to slice and serve than a whole pie. The key to a filling that sets without cracking is a par-baked crust, a gently mixed filling and a bake that stops while the center still has a slight wobble. Everything below uses classic proportions for a 9 by 13 inch (23 by 33 cm) pan.

Ingredients

Shortbread crust

• 2 cups (250 g) all-purpose flour
• 1/2 cup (100 g) packed light brown sugar
• 1/4 teaspoon salt
• 3/4 cup (170 g) cold unsalted butter, cut into cubes

Pecan filling

• 3/4 cup (170 g) unsalted butter, melted
• 1 cup (200 g) packed light brown sugar
• 1/2 cup (170 g) light corn syrup or golden syrup
• 3 large eggs
• 2 tablespoons (30 ml) heavy cream
• 2 teaspoons (10 ml) vanilla extract
• 1/2 teaspoon salt
• 2 cups (200 g) pecan halves, roughly chopped

Steps

1. Heat the oven to 350°F (175°C). Line a 9 by 13 inch (23 by 33 cm) pan with parchment, leaving an overhang on two sides so you can lift the bars out later.
2. Whisk the flour, brown sugar and salt in a bowl. Rub in the cold butter with your fingertips, or pulse in a food processor, until the mixture looks like damp sand and holds together when pressed.
3. Press the crumbs firmly and evenly into the pan, including the corners. Prick the dough with a fork a few times.
4. Bake the crust for 18 to 22 minutes, until it is lightly golden at the edges. Leave the oven on.
5. While the crust bakes, whisk the melted butter and brown sugar until smooth. Whisk in the syrup, then the eggs one at a time, followed by the cream, vanilla and salt. Stir only until combined, because too much whisking adds air that can make the filling puff and crack.
6. Scatter the chopped pecans over the warm crust, then pour the filling evenly over them.
7. Bake for 25 to 35 minutes. The edges should be set and the center should wobble slightly when you gently shake the pan. If you have a thermometer, the center will be near 200°F (93°C).
8. Cool the pan on a rack to room temperature, then chill for at least 2 hours before cutting. Lift out using the parchment and cut into 24 bars.

How to keep the filling from cracking

Cracks usually come from overbaking, a too-hot oven or sudden temperature changes. These habits help:

• Stop baking while the center is still slightly soft. The filling keeps cooking from residual heat and firms up as it cools.
• Mix gently. Whisk until smooth but do not beat the eggs hard.
• Use an oven thermometer. Many home ovens run hotter or cooler than the dial says.
• Cool gradually. Let the pan cool on a rack before chilling, rather than moving a hot pan straight into the refrigerator.
• Avoid a dry, thin crust. A properly par-baked, evenly pressed crust holds the filling and keeps edges from pulling away.

Getting clean slices

• Chill the bars thoroughly before cutting.
• Use a sharp, long knife and wipe it clean between cuts.
• Cut the whole slab in half, then into smaller bars, rather than starting with small pieces.
• For tidy edges, trim a thin strip from each side first. The trimmings make a good snack.

Variations

• Toasted pecans. Toast the nuts for 6 to 8 minutes at 350°F (175°C) for a deeper flavor, and cool them before use.
• Chocolate. Scatter about 1/2 cup (85 g) of chopped dark chocolate over the crust before the pecans.
• Bourbon or maple. Replace the vanilla with 1 tablespoon (15 ml) of bourbon, or swap part of the corn syrup for maple syrup.
• Salted top. Sprinkle a pinch of flaky salt on the bars as soon as they come out of the oven.
• Nut-free swap. Pecans are a tree nut, so for nut allergies use another recipe rather than a swap, and label bars clearly if you are sharing them.

Storage and make-ahead

• Room temperature: Keep the cooled bars in an airtight container for up to 2 days in a cool kitchen.
• Refrigerator: Store for up to 5 days, in layers separated by parchment. Bring to room temperature for the best texture.
• Freezer: Wrap tightly and freeze for up to 2 to 3 months. Thaw overnight in the refrigerator.
• Because the filling contains eggs and dairy, do not leave the bars out for long periods in warm rooms.

Troubleshooting

• Soggy crust: The crust was underbaked or the filling was poured on while it was still wet. Bake the crust until golden next time.
• Runny filling: The bars were not baked long enough or not chilled long enough. Return them to the oven for a few minutes, then cool fully.
• Greasy top: Butter may have separated if the filling was too hot when it was mixed. Let the melted butter cool slightly first.
• Hard, tough filling: The bars were overbaked. Check earlier next time.
• Crumbly crust: The dough needed more pressing, or the butter was too cold. Press firmly and evenly.

Quick answers

Can I use dark corn syrup?

Yes. Dark corn syrup gives a stronger, more molasses-like flavor, while light corn syrup is milder.

Can I make the bars without corn syrup?

You can use golden syrup or a mix of honey and maple syrup, but the texture and set may differ slightly. Corn syrup helps prevent sugar crystals in the filling.

Why are my pecans sinking?

Pecans often float to the top and the filling settles below. That is normal. Scattering them on the crust first and pouring the filling over keeps them evenly spread.

Can I use a smaller pan?

A 9 by 9 inch (23 by 23 cm) pan works with a half recipe. Check the bars a few minutes earlier than the times above.