Best Rhubarb Crumble Bars – Tart & Sweet
Make the best Rhubarb Crumble Bars at home with this easy recipe. After making these many times, I’ve perfected the balance of tart rhubarb and sweet crumble topping. Jump to the recipe or keep reading for my best tips. If you love recipes like this, you’ll also enjoy Try these Georgia Peach Cobbler Recipe with Easy Buttermilk Biscuit Topping and Love these? You'll also enjoy these Jalapeno Popper Twice Baked Potatoes.
Why This Best Rhubarb Crumble Bars – Tart & Sweet Is Pure Comfort
- Tart and sweet flavors in perfect balance
- Easy to make with simple ingredients
- Better than takeout and freezer-friendly
What You'll Need for Best Rhubarb Crumble Bars – Tart & Sweet
Choosing the right ingredients makes a big difference, but this recipe is forgiving enough to work with what you have.
- rhubarb
- sugar
- lemon juice
- butter
- flour
- oats
- vanilla extract
- ground cinnamon
- salt
- Optional: powdered sugar for dusting
📝 Ingredient Notes
- rhubarb: Use fresh or frozen rhubarb. Avoid overcooking to maintain tartness.
🛒 Tools & Equipment I Recommend
- Food Processor — Saves time and ensures even crumble texture → See on Amazon
- Silicone Baking Mat — Prevents sticking and easy cleanup → See on Amazon
How to Make Best Rhubarb Crumble Bars – Tart & Sweet
- Prepare the filling: Mix rhubarb, sugar, lemon juice, and cornstarch in a saucepan. Cook until thickened.
- Make the crumble topping: Combine flour, oats, sugar, cinnamon, and butter until crumbly.
- Assemble the bars: Press half the crumble mixture into a pan, spread the filling, and top with remaining crumble.
- Bake: Bake at 375°F (190°C) for 25-30 minutes until golden.
- Cool and serve: Let cool, dust with powdered sugar, and cut into bars.
Cook's Tips for Perfect Best Rhubarb Crumble Bars – Tart & Sweet
- : Use a food processor for quick and even crumble topping.
- Common mistake and fix: Avoid overcooking the rhubarb filling to maintain tartness. If it's too sweet, add a squeeze of lemon.
- : For a gluten-free version, substitute the flour with almond or oat flour.
Storing & Reheating Best Rhubarb Crumble Bars – Tart & Sweet
Short-Term Storage
Store in an airtight container in the fridge. Store in an airtight container in the fridge for up to 5 days Make-ahead tip: Prepare the crumble mixture and filling up to 1 day ahead. Store separately in the fridge.
Freezing Best Rhubarb Crumble Bars – Tart & Sweet
Freeze for up to 3 months. Thaw overnight in the fridge before serving.
How to Reheat Without Drying It Out
Oven: Reheat in a 350°F (180°C) oven for 10-15 minutes. Microwave: Reheat in the microwave for 20-30 seconds.
Recipe Notes
- Chef tip: For a smooth filling, blend the cooked rhubarb mixture until smooth before spreading.
- Best substitution: Substitute rhubarb with a mixture of strawberries and apples for a sweeter bar.
- Make-ahead: You can make these ahead and freeze. Thaw overnight in the fridge before serving.
- Scaling: This recipe can be easily doubled or halved to suit your needs.
- Troubleshooting: If the crumble topping is too dry, add a tablespoon of cold water or milk to help bind it.
Want to level up this recipe?
Silicone Spatula — Helps press the crumble mixture into the pan and scoop out every last crumble → Check price on Amazon
Best Rhubarb Crumble Bars – Tart & Sweet
Ingredients
Main Ingredients
- rhubarb
- sugar
- lemon juice
- butter
- flour
- oats
Seasonings
- vanilla extract
- ground cinnamon
- salt
Optional Toppings
- powdered sugar for dusting
Instructions
- Prepare the filling: Mix rhubarb, sugar, lemon juice, and cornstarch in a saucepan. Cook until thickened.
- Make the crumble topping: Combine flour, oats, sugar, cinnamon, and butter until crumbly.
- Assemble the bars: Press half the crumble mixture into a pan, spread the filling, and top with remaining crumble.
- Bake: Bake at 375°F (190°C) for 25-30 minutes until golden.
- Cool and serve: Let cool, dust with powdered sugar, and cut into bars.
Notes
- Chef tip: For a smooth filling, blend the cooked rhubarb mixture until smooth before spreading.
- Best substitution: Substitute rhubarb with a mixture of strawberries and apples for a sweeter bar.
- Make-ahead: You can make these ahead and freeze. Thaw overnight in the fridge before serving.
- Scaling: This recipe can be easily doubled or halved to suit your needs.
- Troubleshooting: If the crumble topping is too dry, add a tablespoon of cold water or milk to help bind it.
Storage
- Fridge: Store in an airtight container in the fridge for up to 5 days
- Freezer: Freeze for up to 3 months. Thaw overnight in the fridge before serving.
- Oven reheat: Reheat in a 350°F (180°C) oven for 10-15 minutes.
- Microwave reheat: Reheat in the microwave for 20-30 seconds.
- Make ahead: Prepare the crumble mixture and filling up to 1 day ahead. Store separately in the fridge.
Nutrition Per Serving
- Calories: 250
- Protein: 3g
- Fat: 10g
- Carbs: 35g
- Fiber: 2g
- Sugar: 20g
- Sodium: 150mg
- Cholesterol: 25mg
- Sat. Fat: 6g
Nutritional values are estimates only. Actual values may vary by brand and portion size.
Best Rhubarb Crumble Bars – Tart & Sweet FAQs
Yes, you can use fresh or frozen rhubarb. There's no need to thaw it first.
You may have overcooked the rhubarb filling or used too much sugar. Try reducing the sugar or adding a squeeze of lemon juice.
Yes, you can make the crumble mixture and filling up to 1 day ahead. Store separately in the fridge. Assemble and bake just before serving.
Yes, freeze for up to 3 months. Thaw overnight in the fridge before serving.
Rhubarb crumble bars have a crumble topping instead of a pie crust, making them easier to make and less messy to eat.
A Warm Final Note
I can’t wait for you to try Best Rhubarb Crumble Bars – Tart & Sweet and see how effortlessly it comes together. When you make it, pop back here and leave a rating or share how it turned out — I love hearing from you!
