Butter tart squares are a bar-cookie version of classic Canadian butter tarts: a crisp shortbread base topped with a gooey, buttery brown-sugar filling. Unlike individual tarts, these bake in one pan, slice cleanly, and are perfect when you want that sticky, caramel-like center without fussing with pastry shells.

Butter tarts are a Canadian icon, but butter tart squares hit that sweet spot for both Canada and the USA: they feel like holiday baking, potluck dessert, and cozy weekend treats all at once—but they’re also easy enough to make year-round when you want something simple and comforting. If you’ve ever searched for butter tart squares or Canadian butter tart bars, this is the kind of recipe you can keep in your back pocket: one pan, predictable results, and that signature gooey layer.

Why these butter tart squares work (and how they’re different)

There are a lot of butter tart bar recipes out there that lean either:

too runny (hard to cut, puddly center), or
too cakey (loses the classic butter tart vibe).

This version aims for a true butter tart feel—rich and gooey—with a base that actually holds up. It’s also intentionally not a “healthy” remake and not a “quick microwave caramel bar.” The goal is the real comfort-food square: buttery shortbread + sticky filling.

If you’re building dessert variety on the site, think of this as: gooey, caramel-like, sliceable bar dessert—different intent from a cake like Red Velvet Cake (Moist, Easy & Classic) or a chilled dessert like No-Churn Dark Chocolate Ice Cream. And compared to cookies like Chocolate Chip Cookies (Easy Recipe), these are more of a one-pan bake with a sticky topping.

Key ingredients

For the base (shortbread):

Butter + flour + sugar create that crisp, rich foundation.
A little salt keeps the sweetness balanced.

For the filling:

Brown sugar gives the classic butter tart flavor (caramel + molasses notes).
Butter makes it rich and glossy.
Eggs set the filling so it slices instead of slumping.
Vanilla makes it taste “bakery” instead of just sweet.
Optional cream makes the filling slightly silkier.

If you like experimenting with flavor profiles (especially for a USA audience), you can keep it classic vanilla or add tiny twists like bourbon-style vanilla, a pinch of cinnamon, or a handful of toasted pecans—without turning it into a totally different dessert.

Step-by-step: Butter Tart Squares

1) Prep the pan and oven

Heat oven to 350°F. Line a 9×13-inch pan with parchment paper (leave a bit of overhang so you can lift the slab out). Lightly butter the parchment.

2) Make the shortbread base

In a bowl, combine flour, sugar, and salt. Cut in cold butter (or rub with fingertips) until it looks like coarse crumbs and clumps when squeezed.

Press firmly into the pan in an even layer—really press it down so it bakes into a sturdy base (this is one of the key upgrades for clean slices).

Bake 15–18 minutes, until the edges are just turning lightly golden. Don’t overbake—it will bake again with the filling.

3) Mix the butter tart filling

While the base bakes, whisk the brown sugar and melted butter until smooth. Whisk in eggs one at a time until glossy. Add vanilla and salt. If using cream, whisk it in at the end.

Tip from my updated method: avoid aggressive whipping—too much air can make the top puff and then sink oddly. You want smooth, glossy, and cohesive.

4) Add raisins or nuts (optional)

If you’re using raisins, fold them in now. If you want pecans, sprinkle them evenly over the base before pouring the filling, or fold them into the filling.

5) Bake

Pour filling over the warm base. Bake 22–28 minutes, until the center is set but still has a slight wobble when you gently shake the pan. The top should look glossy and the edges should be more firmly set.

6) Cool completely (this matters)

Cool in the pan at room temperature, then chill at least 2 hours before slicing for clean edges. If you cut too soon, the filling will feel runnier than it really is.

7) Slice like a pro

Lift out using the parchment. Use a long knife, wipe between cuts, and slice into squares. For extra clean cuts, warm the knife under hot water, wipe dry, then slice.

Texture & flavor notes (so you know you nailed it)

The base should be buttery and crisp, not sandy.
The filling should be gooey and rich, but sliceable.
The top should look glossy, not dry.

If you want more “deep caramel” flavor, you can push the bake time slightly (without burning the edges). If you want more gooey, pull it earlier—just remember it must cool and set.

Substitutions and variations

Raisins: yes, no, or swap

No raisins: totally classic and often preferred.
Raisins: very traditional Canadian butter tart style.
Swap raisins for chopped pecans or walnuts.

Corn syrup alternatives

If you prefer not to use corn syrup, you can use maple syrup for a Canada-friendly twist, or honey for a slightly floral sweetness. Maple makes it a little looser and more aromatic—still delicious, just a slightly different set.

Dairy tweaks

A splash of heavy cream makes the filling silkier.
No cream? Still great—just keep the eggs and butter ratio consistent.

Flavor boosts (keep it subtle)

Extra vanilla
Pinch of cinnamon
Tiny pinch of espresso powder (makes caramel notes pop without tasting like coffee)

FAQ

Why are my butter tart squares runny?

Most commonly: underbaked or cut too soon. Bake until the center is set with a slight wobble, then cool completely and chill before slicing.

Why did the filling turn grainy?

That can happen if the sugar didn’t dissolve well. Whisk brown sugar with melted butter until smooth before adding eggs, and avoid overheating the mixture.

Can I freeze butter tart squares?

Yes. Freeze sliced squares in an airtight container with parchment between layers. Thaw in the fridge overnight for best texture.

Do I have to refrigerate them?

They’ll hold at room temperature for a day, but for the cleanest texture and best food-safety comfort, store them in the fridge and bring to room temp before serving.

What’s the best pan size?

A 9×13-inch pan gives the classic thickness for squares. If you use an 8×8, they’ll be thicker and need a longer bake.

Light nutrition context (no diet talk)

These are a classic rich dessert: butter + sugar + eggs. Think of them like a special-treat bar, not an everyday snack. If you want to balance a dessert table, pair them with lighter fruit-forward desserts or serve smaller squares—they’re intense in a good way.

What to serve with butter tart squares (and suggested posts)

If you’re serving these as part of a spread, I like pairing one gooey square with something creamy or something warm. Here are ideas already on the site:

Cozy winter pairing: Creamy Pumpkin Soup before dessert
Comfort-food dinner first: Homemade Salisbury Steak (Easy Recipe)
Holiday or Sunday dinner vibe: Traditional Boeuf Bourguignon (Oven Version)
A classic side that fits almost anything: Homemade Mashed Potatoes
Another cozy dessert for the table: Moist Apple Cake
Keep the dessert theme going: Homemade Tiramisu (Easy and Foolproof)
Cookie night add-on: Chocolate Chip Cookies (Easy Recipe)
For a cold-sweet option: No-Churn Dark Chocolate Ice Cream
If you want something fun and Canadian: Canadian Beaver Tails
For general browsing and more ideas: MichelDumas.com Home

Butter Tart Squares (Canadian-Style, Easy for USA + Canada)

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Prep Time 15

Cooking Time 40

Category Dessert

Cuisine Canadian

Portions 20 Portions

Calories 300 kcal

Ingredients

Shortbread Base

2 cups all-purpose flour
1/2 cup granulated sugar
1/2 tsp fine salt
1 cup unsalted butter cold and cubed

Butter Tart Filling

1 1/2 cups packed light brown sugar
1/2 cup unsalted butter melted
3 large eggs
2 tsp vanilla extract
1/2 tsp fine salt
2 tbsp heavy cream optional
1 cup raisins or chopped pecans optional

Instructions

Heat oven to 350°F. Line a 9×13-inch pan with parchment and lightly butter.
Mix flour, sugar, and salt. Cut in cold butter until crumbly. Press firmly into the pan.
Bake base 15–18 minutes, just lightly golden at the edges.
Whisk brown sugar and melted butter until smooth. Whisk in eggs one at a time. Add vanilla, salt, and optional cream. Stir in raisins/pecans if using.
Pour filling over warm base. Bake 22–28 minutes, until set with a slight wobble in the center.
Cool completely, then chill at least 2 hours. Lift out and slice into squares.

Notes