Rhubarb squares are a tasty treat with a sweet and tangy flavor! They have a buttery base and a fruity rhubarb topping that’s just the right mix of sweet and tart.
I love how these squares are easy to make and perfect for sharing. Just cut them up and enjoy a little bite of spring on your plate! Who knew rhubarb could be this delicious? 😋
Key Ingredients & Substitutions
Rhubarb: Fresh rhubarb is key for a tart flavor. If you can’t find fresh rhubarb, frozen rhubarb can work well too—just thaw and drain excess moisture before using.
Granulated Sugar: If you’re looking to cut down on sugar, consider using a sugar substitute that’s designed for baking. Alternatively, try coconut sugar for a slightly different flavor profile.
Old-Fashioned Oats: If you’re gluten-free, use certified gluten-free oats. Quick oats can also be used but may yield a different texture; I prefer the heartiness of old-fashioned oats.
Butter: For a dairy-free option, feel free to substitute with margarine or a plant-based butter. Just ensure it’s softened for easier mixing!
How Do I Achieve the Perfect Crust and Topping?
The crust is important for holding the rhubarb filling. When mixing your dry ingredients with butter, aim for a crumbly texture. It shouldn’t be completely smooth—some larger crumbs are great for a nice texture!
- Cream the butter and sugars until fluffy; this adds air for a lighter crust.
- Don’t skip letting the rhubarb mixture sit! This helps it become juicy and flavorful.
- For the crumb topping, you want to keep some lumps; it’ll create a delicious crunch when baked.
After baking, let it cool before slicing. This keeps the squares intact and makes for prettier pieces to serve!
How to Make Delicious Rhubarb Squares
Ingredients You’ll Need:
For the Rhubarb Filling:
- 2 cups rhubarb, chopped
- 1 cup granulated sugar
- 1 tablespoon cornstarch
- 1 teaspoon vanilla extract
For the Crust and Topping:
- 2 cups all-purpose flour
- 1 cup old-fashioned oats
- 1 teaspoon baking soda
- ½ teaspoon salt
- 1 cup unsalted butter, softened
- ½ cup brown sugar, packed
- ½ teaspoon ground cinnamon
How Much Time Will You Need?
This recipe will take about 15 minutes to prepare and then 35-40 minutes to bake. After baking, let the squares cool for a little while before cutting. In total, you’re looking at about 1 hour of time from start to finish. Enjoy this fruity treat fresh or chilled!
Step-by-Step Instructions:
1. Preheat and Prepare:
Start by preheating your oven to 350°F (175°C). While it heats up, grease a 9×13 inch baking dish or line it with parchment paper for easy cleanup later. This will be the home for your scrumptious rhubarb squares!
2. Make the Rhubarb Filling:
In a medium bowl, toss together the chopped rhubarb, granulated sugar, cornstarch, and vanilla extract. Let this sit for a few minutes. This helps the rhubarb release some juices, and it will mix well later!
3. Mix the Dry Ingredients:
In a separate large bowl, combine the all-purpose flour, oats, baking soda, salt, and ground cinnamon. Give it a good stir so everything is evenly mixed and ready for the next steps.
4. Cream the Butters and Sugars:
In another bowl, cream together the softened unsalted butter, brown sugar, and granulated sugar using a mixer. Mix until the mixture is light and fluffy – this will take about 2-3 minutes. It’s a great way to add extra flavors and richness!
5. Combine Wet and Dry Mixtures:
Gradually add the dry mixture to the butter mixture, stirring until it becomes nice and crumbly. You’re looking for a texture that holds together but is still crumbly – perfect for a crust!
6. Form the Bottom Crust:
Take about two-thirds of the crumb mixture and press it firmly into the bottom of your prepared baking dish. Make sure it’s evenly spread out. This will act as your bottom crust.
7. Add the Rhubarb Layer:
Pour the rhubarb mixture over the crust, being sure to spread it evenly. This luscious layer will give your rhubarb squares that delightful fruity taste!
8. Finish with Crumb Topping:
Now sprinkle the remaining crumb mixture over the top of the rhubarb filling – this will create a nice crunchy topping that everyone will love.
9. Bake:
Pop the baking dish into your preheated oven and let it bake for 35-40 minutes, or until the top is beautifully golden brown. Your kitchen will smell wonderful!
10. Cool and Enjoy:
Once done baking, remove the dish from the oven and let it cool in the pan for a bit. Then, slice into squares and serve. These rhubarb squares are best enjoyed at room temperature or slightly chilled. Enjoy this sweet treat!
Can I Use Frozen Rhubarb for This Recipe?
Yes, you can use frozen rhubarb! Just make sure to thaw it completely and drain any excess liquid before adding it to the mixture. This will help prevent the filling from becoming too watery.
What Can I Substitute for Oats?
If you don’t have old-fashioned oats, you can substitute with quick-cooking oats, though the texture will be slightly different. Alternatively, you could use an equal amount of crushed nuts or seeds for a gluten-free option!
How Should I Store Leftovers?
Store any leftovers in an airtight container at room temperature for up to 3 days. If you want to keep them longer, you can refrigerate them for up to a week. Just be sure to allow them to come to room temperature before serving for the best flavor!
Can I Make This Recipe Vegan?
Absolutely! To make vegan rhubarb squares, substitute the unsalted butter with a plant-based butter or coconut oil, and use ground flaxseed mixed with water as an egg replacer (1 tablespoon of flaxseed mixed with 2.5 tablespoons of water equals one egg). The finished product will still be delicious!
