My Cozy Custardy Apple Squares

You know those golden afternoons when your kitchen smells like heaven and you can’t help but smile? That’s exactly what happens every time I bake my Custardy Apple Squares.

Just yesterday, I found myself with a few lonely apples rolling around in my fruit bowl, and instead of letting them go to waste, I whipped up this tender, custard-like treat that has my family asking for seconds before they’ve even finished their first bite.

Why You’ll Love This Custardy Apple Squares Recipe

I’ve been making these squares for years, and they never fail to impress—even when I’m feeling a bit scattered in the kitchen.

You’ll love how the batter transforms those simple apple slices into something magical, creating pockets of creamy custard between layers of fruit.

My kids call it “apple cake that tastes like a hug,” and honestly, I couldn’t describe Custardy Apple Squares any better myself.

My Favorite Apple Dessert Companions

When I’m planning a cozy dessert spread, I always pair these squares with my Honey Apple Upside-Down Cake for guests who want something a little more dramatic.

And if you’re thinking about a complete autumn menu, my Roasted Apples and Sweet Potatoes makes the perfect savory side that bridges the gap beautifully.

Ingredients You Need for Custardy Apple Squares

Here’s what you’ll need to create magic in your own kitchen:

• 3 medium sweet apples (I swear by Gala or Honeycrisp, but use what you have)
• 1/2 cup all-purpose flour (the foundation that holds everything together)
• 1 teaspoon baking powder (for that perfect rise)
• 2 large eggs, room temperature (this makes mixing so much easier)
• 1/3 cup granulated sugar (not too sweet, just right)
• Pinch of fine sea salt (brings out the apple flavor beautifully)
• 2 teaspoons vanilla extract (pure, never imitation)
• 6 tablespoons whole milk, room temperature (creates that custard texture)
• 2 tablespoons unsalted butter, melted and cooled (richness without heaviness)
• Powdered sugar for dusting (optional, but who are we kidding?)

A few notes from my kitchen to yours: room temperature ingredients mix so much better, and if your apples are a bit tart, don’t worry—the Custardy Apple Squares batter balances everything perfectly.

How to Make Custardy Apple Squares

Step 1: Heat your oven to 400°F and butter an 8-inch square pan generously. I learned the hard way that skimping on butter here means stuck squares later.

Step 2: Peel your apples and slice them paper-thin—about 1/16 inch if you want to be precise. I use my mandoline, but a sharp knife works perfectly if you’re careful. You want them thin enough to bend slightly but not so thin they fall apart.

Step 3: Whisk together the flour and baking powder in a small bowl. Set it aside while you work on the custard base.

Step 4: In a larger bowl, whisk the eggs, sugar, and salt for about 2 minutes until the mixture looks pale and the sugar mostly dissolves. Add your vanilla, then pour in the milk and melted butter, whisking constantly.

Step 5: Gently fold the flour mixture into the wet ingredients until just combined—no lumps, but don’t overmix.

Step 6: Add your apple slices and fold them in carefully with a spatula. Each slice should be coated with that beautiful custard batter. The mixture will look rustic and bumpy, and that’s exactly what you want.

Step 7: Pour everything into your prepared pan and smooth the top as best you can. Bake for 45-55 minutes until the top is golden and puffed all over, including the center. A knife inserted in the middle should come out mostly clean.

Step 8: Cool for at least 20 minutes before cutting. I know waiting is torture, but trust me on this—the Custardy Apple Squares need time to set properly.

I’d love for you to save this recipe to your Pinterest boards! You can find all my favorite dessert recipes on my Pinterest page where I share kitchen tips and seasonal treats year-round.

How I Make This Custardy Apple Squares Perfect Every Time

The secret to perfect squares is all in the apple slicing and the waiting game. I slice my apples just before mixing to prevent browning, and I never rush the cooling time—those custard layers need to firm up.

If your squares seem a bit wobbly in the center after baking, give them an extra 5 minutes in the oven. You’ll know they’re ready when the whole surface is evenly puffed and golden.

Can I make Custardy Apple Squares ahead of time?

Absolutely! I often bake these squares in the morning for an afternoon treat.

They actually taste even better after a few hours at room temperature, and they keep beautifully covered for up to three days.

What’s the best way to store leftover apple squares?

Cover them tightly and store at room temperature for 2-3 days, or refrigerate for up to a week. I sometimes warm individual pieces in the microwave for 15-20 seconds to bring back that fresh-baked warmth.

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Can I substitute different apples in this recipe?

Your Custardy Apple Squares work beautifully with any firm, sweet apple. I’ve used Fuji, Braeburn, and even Granny Smith when I wanted a bit more tartness.

Just avoid very soft apples that might turn mushy during baking.

Can I freeze these apple squares?

Yes! Wrap individual squares in plastic wrap and freeze for up to 2 months. Thaw at room temperature and dust with fresh powdered sugar before serving.

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How I Love to Serve My Custardy Apple Squares

These squares have become my go-to for Sunday afternoon family gatherings and weeknight desserts when I want something special without the fuss.

I serve them warm with a dollop of vanilla ice cream or just a dusting of powdered sugar.

During apple season, I love making a double batch—one for dessert and another for breakfast the next morning with coffee.

The Custardy Apple Squares are equally at home on a casual Tuesday night or dressed up for weekend company.