3 Ingredient Rhubarb Squares

If you’re looking for a sweet and tangy treat that’s incredibly simple to make, these 3 Ingredient Rhubarb Squares are your answer. This recipe takes minimal effort but delivers maximum flavor. The tartness of fresh rhubarb paired with a buttery, crumbly crust makes for an irresistible dessert you’ll want to whip up again and again. Plus, with only three ingredients, you don’t have to worry about complicated steps—just a few minutes of prep and you’ve got yourself a delicious dessert to enjoy!

These rhubarb squares are perfect for spring when rhubarb is in season, and they’re great for a last-minute treat. Whether you’re serving them at a family dinner, a picnic, or just for yourself, they’re sure to be a hit.

Why You’ll Love 3 Ingredient Rhubarb Squares

Super Easy: You only need three ingredients to make this delicious dessert—no complicated steps here! Even beginner bakers can tackle this one with ease.

Quick & Simple: With minimal prep and just a short baking time, these rhubarb squares are a fast way to satisfy your sweet tooth.

Tart & Sweet Flavor: The rhubarb provides a lovely tartness, while the crust is buttery and slightly sweet—creating a perfectly balanced flavor that’s sure to please.

Versatile: These squares are great on their own, but you can also dress them up with a dusting of powdered sugar or a dollop of whipped cream for an extra special touch.

Ingredients in 3 Ingredient Rhubarb Squares

Rhubarb

Fresh rhubarb is the star of this recipe. It gives the squares that bright, tangy flavor that pairs beautifully with the buttery crust.

Cake Mix

A simple box of cake mix—preferably yellow or vanilla—forms the base of the dessert. It creates a sweet, buttery crust that complements the tartness of the rhubarb perfectly.

Butter

Melted butter is added to the cake mix to create that crumbly, golden crust. It binds everything together and adds richness to the squares.

(Note: the full ingredients list, including measurements, is provided in the recipe card directly below.)

Instructions

Ready to make these sweet, tangy rhubarb squares? Here’s how:

Preheat the Oven

Preheat your oven to 350°F (175°C) and grease a 9×9-inch baking dish. This will ensure the squares don’t stick while baking.

Prepare the Rhubarb

Wash the rhubarb thoroughly and cut it into small 1-inch pieces. You’ll want about 3 cups of chopped rhubarb for this recipe.

Mix the Cake Base

In a medium bowl, combine the cake mix with the melted butter. Stir until you get a crumbly dough. This will form the crust for your squares.

Layer the Rhubarb and Cake Mixture

Spread half of the crumbly dough mixture evenly in the bottom of the prepared baking dish to form a crust. Top with the chopped rhubarb, making sure it’s spread out evenly. Sprinkle the remaining dough mixture over the rhubarb, covering it as best as you can.

Bake

Bake in the preheated oven for 35-40 minutes, or until the top is golden brown and the rhubarb is bubbling. The crust should be firm and slightly crisp at the edges.

Cool and Serve

Allow the rhubarb squares to cool before slicing them into squares. You can enjoy them warm or at room temperature. They’re perfect with a cup of tea or coffee!

Nutrition Facts

Servings: 9
Calories per serving: 210
Total Fat: 9g

• Saturated Fat: 5g
  Cholesterol: 25mg
  Sodium: 230mg
  Total Carbohydrates: 32g
• Dietary Fiber: 1g
• Sugars: 18g
  Protein: 2g
  Calcium: 10mg
  Iron: 1mg
  Potassium: 100mg

Preparation Time

Prep Time: 10 minutes
Cook Time: 35-40 minutes
Total Time: 45-50 minutes

How to Serve 3 Ingredient Rhubarb Squares

These rhubarb squares are delicious on their own, but you can elevate them with some fun toppings:

With Whipped Cream: A dollop of fresh whipped cream on top adds a rich, creamy contrast to the tartness of the rhubarb.

With Ice Cream: For a real treat, serve these squares with a scoop of vanilla ice cream. The cold ice cream pairs perfectly with the warm squares.

Dust with Powdered Sugar: A light dusting of powdered sugar on top can give these squares an extra sweet finish.

With Fresh Berries: Add a handful of fresh berries like strawberries or blueberries on the side for a colorful and refreshing touch.

Additional Tips

Use Frozen Rhubarb: If fresh rhubarb isn’t available, you can use frozen rhubarb. Just make sure to thaw it and drain off any excess moisture before using it in the recipe.

Customize the Cake Mix: You can use a lemon cake mix or spice cake mix for a unique twist on the flavor of the crust. Lemon cake mix would add a nice citrusy zing that complements the rhubarb beautifully.

Make It Ahead: These rhubarb squares can be made ahead of time and stored in an airtight container at room temperature for up to 3 days. They also freeze well for up to a month if you want to save them for later!

Cut Even Squares: To make neat, even squares, let the dessert cool completely before cutting. This will help the pieces hold together better.

FAQ Section

Q1: Can I use a different type of fruit in this recipe?
A1: Yes! You can easily swap the rhubarb for other fruits like strawberries, apples, or peaches. Just keep in mind that the tartness of the rhubarb is unique, so a sweeter fruit may require you to adjust the sweetness.

Q2: Can I use a different flavor of cake mix?
A2: Absolutely! A lemon or strawberry cake mix would work great with rhubarb, or you can try spice cake mix for a cozy, fall-inspired version.

Q3: Do I need to peel the rhubarb?
A3: No, you don’t need to peel rhubarb for this recipe. Just wash it well and chop it into small pieces, and you’re good to go.

Q4: Can I make these squares gluten-free?
A4: Yes! You can use a gluten-free cake mix to make these squares gluten-free. Just make sure to check the ingredients to ensure everything is gluten-free.

Q5: Can I make these squares ahead of time?
A5: Yes, these squares can be made ahead of time and stored in an airtight container for up to 3 days. You can also freeze them for up to a month.

Q6: Can I use margarine instead of butter?
A6: Yes, you can use margarine instead of butter if needed. Just make sure it’s melted before mixing it with the cake mix.

Q7: How do I store leftovers?
A7: Store any leftover rhubarb squares in an airtight container at room temperature for up to 3 days. They can also be stored in the fridge for up to a week.

Q8: Can I add a streusel topping?
A8: Definitely! If you like a bit of crunch, you can top the rhubarb squares with a simple streusel made from butter, flour, and sugar before baking.

Q9: Can I double the recipe?
A9: Yes! If you’re serving a larger crowd, you can easily double the recipe and bake it in a larger pan, just be sure to adjust the baking time accordingly.

Q10: How do I know when the rhubarb squares are done?
A10: The squares are done when the top is golden brown and the rhubarb is bubbling. You can also insert a toothpick into the crust to check for doneness—it should come out clean.

Conclusion

These 3 Ingredient Rhubarb Squares are an easy, tasty, and no-fuss dessert that everyone will love. The combination of the sweet buttery crust and tangy rhubarb filling is simply irresistible. Whether you’re an experienced baker or just getting started, this recipe is the perfect way to enjoy rhubarb without all the fuss. Simple ingredients, quick preparation, and a delicious result—what more could you ask for?

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