Vegan Oreo Blondies — That Vegan Dad

Delicious Oreo Blondies that are vegan friendly

If you're on the hunt for a vegan sweet treat that’s indulgent, crowd-pleasing, and entirely plant-based, these Oreo Blondies are about to become your new go-to. They're soft, chewy, golden, and loaded with everyone’s favourite cookie — the Oreo!

I made a tray of these on a lazy Sunday afternoon, and between myself, the kids, and my wife, they disappeared before we could even pack up the leftovers. So yeah… you've been warned. These are dangerously good!

Whether you’re hosting a party, baking for the kids lunchbox, or just in need of a comforting afternoon pick-me-up, these easy Oreo blondies are here for you. And the best part? They’re 100% vegan — no eggs, no dairy, just pure deliciousness.

Are Oreos Actually Vegan?

Before we dive into the recipe, let’s answer the most common question I get: Are Oreos vegan?

This is something I covered in detail in my YouTube video: Are Oreos Vegan? In short — yes, most classic Oreo flavours in Australia are vegan-friendly, but it’s worth checking the label for any milk-derived ingredients or cross-contamination warnings if you're strict.

I also keep an Accidentally Vegan Food Guide updated regularly with any new flavour drops that pass the vegan test — so bookmark that one if you're an Oreo fan!

What is the Difference Between a Brownie and a Blondie?

A brownie is chocolate-based — dark, fudgy, and rich in cocoa. It’s that dense square you reach for when you want serious chocolate action.

A blondie, on the other hand, ditches the cocoa and leans into vanilla and brown sugar for that golden, caramelised flavour. Still dense and chewy like a brownie, but with a totally different vibe — buttery, sweet, and ridiculously good with vegan cookies folded in.

This vegan Oreo blondie recipe brings together the best of both worlds: chewy, soft bars studded with crunchy bits of your favourite cookies.

What is a Flax Egg?

If you’re new to egg-free baking, you might be wondering: what on earth is a flax egg?

A flax egg is a simple plant-based egg substitute made by mixing 1 tablespoon of ground flaxseed with 3 tablespoons of water. After sitting for 5–10 minutes, it becomes thick and gel-like — working as a binder just like a chicken egg.

Is 1 Flax Egg Equal to 1 Egg?

Yes! In most baking recipes, 1 flax egg = 1 regular egg. It’s not suitable for whipping (like in meringues), but it's perfect for cookies, brownies, blondies, vegan pancakes, and muffins.

What Can I Use Instead of a Flax Egg?

If you don’t have flaxseed on hand or want to try something different, here are a few other vegan egg replacements:

Chia Egg – 1 tbsp chia seeds + 3 tbsp water (same method as flax egg)
Mashed Banana – ¼ cup per egg (adds sweetness and moisture)
Applesauce – ¼ cup per egg (neutral taste, also adds moisture)
Commercial Egg Replacers – Like Orgran vegan egg replacer.

Why You’ll Love These Oreo Blondies

Super easy to make with pantry staples
Kid-approved and perfect for lunchboxes
A hit at parties, BBQs or bake sales
Great for non-vegans too — nobody will know they’re plant-based!
Perfect balance of soft chewiness and crunchy cookie chunks

Oreo Blondies Variations to Try

Choc chip twist – Add ½ cup of vegan white or dark choc chips for a double treat.
Nuts for crunch – Mix in some crushed pecans or walnuts for texture.

Time-Saving Tips for Your Oreo Blondies

Mix flax eggs first so they’re ready when you need them.
Melt vegan butter in the microwave in short bursts.
Use a ziplock bag and rolling pin to crush your Oreos fast and mess-free.

FAQ – Vegan Oreo Blondies

Q: Are all Oreos vegan?
A: Not all, but many classic flavours in Australia are. Check the ingredients — and visit my Accidentally Vegan Guide for updates!

Q: Can I make these gluten-free?
A: Absolutely! Just use a good-quality gluten-free plain flour and make sure your Oreos are GF too.

Q: Can I reduce the sugar?
A: You can slightly reduce it, but keep in mind it affects both texture and taste. These are a treat after all!

Q: Do they need to be refrigerated?
A: Only if you want them to last longer — otherwise, room temp in a sealed container is fine for a few days.

Q: Can kids make these?
A: Yep! This is a great recipe for kids to help with — especially pressing the Oreos on top. Just help them with the oven step.

These vegan Oreo blondies are the kind of bake that disappears almost too quickly. The kids love them, they’re a hit at gatherings, and they make plant-based baking feel totally accessible — which is what I’m all about.

PRINT RECIPE

INGREDIENTS

Vegan Oreo Blondies

2 flax 'eggs' (to make 1 flax egg combine 1tbsp ground flaxseed and 3 tbsp)⁠
2 ¼ cups plain flour
1 tsp salt
½ tsp bi-carb soda
¾ cup vegan butter, melted
1 cup sugar
¾ cup brown sugar
2 flax “eggs” (2 tbsp ground flaxseed + 6 tbsp water)
1 tsp vanilla extract
1 ½ cups Oreos, crumbled ⁠

METHOD

Preheat oven to 180°C.
In a small bowl, mix 2 tbsp ground flaxseed with 6 tbsp water. Let it sit for 10 minutes to thicken.
In a mixing bowl, sift together the flour, salt, and bi-carb soda.
In another bowl, combine melted butter, sugars, flax eggs, and vanilla. Mix until smooth.
Stir the dry mixture into the wet until combined.
Fold in 1 cup of crumbled Oreos.
Pour into a lined or greased rectangle tray, smooth the top, and press remaining Oreos into the surface.
Bake for 25 minutes, or until golden and set.
Cool in tray for 10 mins, then transfer to a wire rack to fully cool before slicing.