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The Best Date Squares (Kirstie’s Mom’s Famous Recipe)

Date squares on a white plate
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Also known as Matrimonial Bars (just found this out!) date squares are a bit of a sleeper hit.  Growing up they sounded a bit too healthy, but over the years, we’ve really grown to love them, and would take one of Donna’s date squares over a gooey chocolate concoction any day of the week.

If you grew up in Canada, chances are you’ve had a pan of date squares cooling on the counter at some point–at a church bake sale, on a road trip pit stop, or packed lovingly into a lunchbox. For us, the gold standard comes from one woman and one woman only: Donna (also known as Mamma D, Gramma D, and of course, Kirstie’s mom).

These are the date squares that disappear at every gathering. The ones people try once and immediately ask, “Can you send me the recipe?” The ones that freeze beautifully, slice perfectly, and taste like every comforting Canadian memory rolled into one buttery, crumbly bar.

If you’re searching for the best date squares recipe, you just found it.

This recipe is for TWO 9×9 inch square baking pans.  Because as Donna says, if you’re going to make them, make them.  Just like our Banana Bread recipe, the date squares freeze really well.

Ingredients

Units Scale
  • 3 cups rolled oats
  • 3 cups all-purpose flour
  • 1/2-1 tsp salt (we like that extra bit of salt)
  • 1 1/2 tsp. baking soda
  • 2 cups PACKED brown sugar
  • 1 1/2 cups salted butter, softened
  • 1 1/2 lbs. pitted dates, cut up
  • 2 cups water, or, as needed
  • 2/3 cup packed brown sugar (second amount)
  • 2 tsp. lemon juice, or to taste

Instructions

  1. Preheat oven to 350 degrees F
  2. In a large bowl combine oats, flour, salt, baking soda and the two cups of brown sugar.  Mix in (‘snap) the butter in until crumbly.  Roughly divide this mixture into 4: pat one-fourth of the mixture into the bottom of one of the 9×9 pans.  Pat the other one-fourth in the bottom of the other 9×9 pan.  Reserve remaining crumble for the tops of the pans.
  3. For the filling:  place dates, water, and second amount of brown sugar in a medium pot.  Bring up just to a boil and continue to simmer over high heat until thickened, breaking up the dates with a wooden spoon or potato masher until no large pieces of dates remain.  Add more water if necessary.   Stir in lemon juice.  Taste your mixture, make sure it is tart enough.
  4. Let cool slightly then divide evenly amongst the pans.  Top the pans with remaining crumble.
  5. Bake for 25-30 minutes, or until tops are lightly golden brown.
  6.  Cool completely (don’t even think about it, says Donna) before cutting into squares.  Give the rustic edges to your kids, save the nice ones for the bake sale :).

Notes

Substitutions for Date Squares

We’ll say it right now, Donna’s original version is tough to beat. But if you need a few adjustments, here’s where we’d start.

Gluten-Free Date Squares

Swap the all-purpose flour for a 1:1 gluten-free baking blend.

Dairy-Free Version

Use a high-quality dairy-free butter substitute. Choose one with a higher fat percentage for the best crumble texture.

Less Sweet Option

Reduce the brown sugar in the crumble to 1 1/2 cups.

You can also sweeten the filling only with dates if preferred.

Coconut Variation

Replace 1 cup of oats with shredded coconut for a slightly more tropical version.

Orange Date Filling

Swap the lemon juice for orange zest and a splash of orange juice for a softer citrus flavour.

What to Know and Avoid in This Recipe

Do not rush the filling. Dates need time to soften properly.

Do not overbake. You want the edges lightly golden, not dry.

Press the base firmly, but not aggressively. Too compact and the squares become dense.

And yes, let them cool before slicing. We know. It’s hard.

Storage Recommendations

These freeze beautifully, which is one of the reasons Donna always made big batches.

  • Store in an airtight container at room temperature for up to 4 days
  • Refrigerate for up to 1 week
  • Freeze for up to 3 months, layered with parchment paper
  • Thaw at room temperature or eat cold from the fridge

Honestly? Cold date squares with coffee might be one of life’s great underrated pleasures.

FAQ

Can I make date squares ahead of time?

Yes. In fact, they slice even better the next day once fully set.

Can I use quick oats?

Rolled oats give the best texture, but quick oats work if that’s what you have.

Why add lemon juice to the filling?

It balances the sweetness and brightens the flavour of the dates.

Can I halve the recipe?

Technically yes. Donna would still tell you not to.

Do date squares freeze well?

Exceptionally well. Freeze them cut or uncut.

Key Takeaways

  • Properly softened dates create the best filling texture
  • Rolled oats give the crumble the right structure
  • These date squares freeze beautifully
  • Letting them cool fully improves slicing
  • Donna’s original recipe still rules

Why This Recipe Matters

This isn’t just a pan of date squares.

It’s road trip snacks wrapped in foil. It’s something waiting on the counter after school. It’s the pan your mom told you not to cut into yet.

For Kirstie, Donna’s date squares were part of almost every family gathering growing up. Reliable. Generous. Always there.

And now, they’re yours to make too.

About the Authors

Jody O’Malley and Kirstie Herbstreit are the Red Seal certified chef co-owners of The Culinary Studio in Waterloo, Ontario. Jody is a Stratford Chefs School graduate (2002) and Kirstie trained at SAIT in Calgary (2003). Together, they bring over 20 years of professional cooking experience and 15 years building one of Canada’s leading culinary education businesses. They teach home cooks the science and techniques behind great food, not just the recipes, and co-host the Chef Over Your Shoulder podcast alongside Amy Schlueter.

Find it online: https://blog.theculinarystudio.ca/recipes/the-best-date-squares/