These delicious rhubarb bars with cream cheese frosting are a perfect balance of tart and sweet. They offer a delightful dessert experience with a buttery, crumbly base, a tangy rhubarb filling, and a smooth, creamy frosting. This recipe is straightforward, yielding impressive results everyone will love.

Recipe Overview
| Prep Time | 30 minutes |
|---|---|
| Cook Time | 40-45 minutes |
| Total Time | 70-75 minutes |
| Servings | 16 servings |
| Difficulty | Easy |
| Cuisine | American |
Why This Recipe Works
This rhubarb bars recipe works because of its simple method and balanced flavors. The crust is made from scratch, which contributes to the superior taste of the finished product. The cream cheese frosting adds a richness that complements the tartness of the rhubarb, creating a harmonious blend.
I developed this recipe after years of trying various rhubarb desserts. I wanted something that was easy to make, even for novice bakers like myself. This recipe has become a staple for me during rhubarb season because it never fails to impress anyone who tries it.
The combination of textures and flavors makes these rhubarb bars irresistible. You will find that these bars are the perfect treat for any occasion, from casual gatherings to special celebrations. The recipe is also fantastic because the ingredients are relatively inexpensive and accessible.
Ingredients
| Ingredient | Quantity | Notes & Substitutions |
|---|---|---|
| All-purpose flour | 3 cups | You can substitute up to 1 cup with whole wheat flour for a nuttier flavor. |
| Granulated sugar | 1 1/2 cups, divided | Use regular granulated sugar; some prefer turbinado sugar for the topping. |
| Salted butter, cold, cubed | 1 1/2 cups (3 sticks) | Unsalted butter works too; add a pinch of salt to the crust. |
| Large eggs | 2 | Use large eggs for best results. |
| Fresh rhubarb, chopped | 4 cups (about 1 pound) | Fresh is best, but frozen, thawed rhubarb can be used. Ensure it is well-drained. |
| Cornstarch | 3 tablespoons | Helps to thicken the rhubarb filling. Arrowroot starch also works. |
| Cream cheese, softened | 8 ounces | Use full-fat cream cheese for the creamiest frosting. Reduced-fat works too. |
| Powdered sugar | 2 cups | Sift to avoid lumps in the frosting. |
| Vanilla extract | 1 teaspoon | Adds rich flavor; use quality vanilla for better results. |
Step-by-Step Instructions
-
Prepare the Crust
- Whisk together flour, and 1/2 cup of granulated sugar, and salt in a large bowl.
- Cut in cold butter using a pastry blender or your fingers until the mixture resembles coarse crumbs.
- Press the crumb mixture evenly into the bottom of a 9×13 inch baking pan.
- Bake crust in a preheated oven at 350°F (175°C) for 15-20 minutes, or until lightly golden.
-
Make the Rhubarb Filling
- Toss chopped rhubarb, remaining 1 cup of granulated sugar, and cornstarch in a bowl.
- Pour the rhubarb mixture over the par-baked crust.
- Bake for 25-30 minutes, or until the rhubarb is tender and the filling is bubbly.
- Let cool completely before frosting. This is important for the frosting to set right.
-
Create the Cream Cheese Frosting
- Beat softened cream cheese and vanilla extract in a medium bowl until smooth.
- Gradually add powdered sugar, beating until frosting is light and fluffy.
- Spread the frosting evenly over the cooled rhubarb bars.
- Chill for at least 30 minutes before cutting and serving. This allows the frosting to set.
-
Cut and Serve
- Cut the chilled bars into squares or rectangular pieces.
- Serve immediately and enjoy these delightful rhubarb bars.
Chef Tips for Perfect Results
- Use cold ingredients for the crust. Cold butter is key to creating that perfect crumbly texture. Using cold ingredients makes a big difference.
- Don’t overbake the crust. It should be lightly golden, not crisp. Consider experimenting with the bake time a bit.
- Let the bars cool completely before frosting. Warm bars will melt the frosting. Ensure proper cooling time.
- Sift the powdered sugar for the frosting to avoid lumps. Lumps can ruin the frosting texture.
- Chill the bars for at least 30 minutes after frosting. This helps the frosting set and makes cutting easier.
- Use fresh rhubarb for the best flavor. However, frozen rhubarb works, too, though it can result in a slightly softer filling.

Common Mistakes to Avoid
- Overmixing the crust leads to a tough texture. Mix only until the butter is incorporated.
- Not chilling the bars before cutting results in a messy appearance. Ensure the frosting is set.
- Using warm ingredients for the crust or filling can affect the texture of your bars. Make sure ingredients are cold.
- Overbaking the rhubarb filling can make it dry. Monitor and remove once tender.
- Using too much or too little cornstarch in the filling will affect the consistency. Measure ingredients accurately.
Variations and Substitutions
| Ingredient | Substitution | Impact on Flavor |
|---|---|---|
| All-purpose flour | Up to 1 cup whole wheat flour | Adds a nutty flavor and slightly denser texture. |
| Granulated sugar | Turbinado sugar | Adds a slight molasses flavor and a bit of crunch to the crust. |
| Butter | Unsalted butter (with added salt) | Taste is very similar, adjust your salt in crust. |
| Fresh Rhubarb | Frozen, thawed rhubarb | Filling might be slightly softer; ensure rhubarb is well-drained. |
| Cornstarch | Arrowroot starch | Provides a similar thickening effect. |
| Cream Cheese | Reduced-Fat Cream Cheese | Lighter flavor; reduce sugar in frosting slightly. |
Serving Suggestions and Pairings
Serve these rhubarb bars as a dessert at a summer barbecue or during a holiday celebration. They are also perfect for a picnic or potluck. You can offer them during Mother’s Day or a casual afternoon snack.
For pairings, try serving them with a cup of hot tea or coffee. A scoop of vanilla ice cream can complement the tartness of the rhubarb. Think of a light, fruity dessert wine, for an elegant touch.
Storage and Reheating
| Method | Duration | Instructions |
|---|---|---|
| Room Temperature | 1-2 days | Store in an airtight container. |
| Refrigerator | Up to 5 days | Store in an airtight container or covered pan. |
| Freezer | Up to 2 months | Wrap individually and seal in a freezer-safe bag or container. Thaw in the refrigerator. |
Nutritional Information
| Nutrient | Amount per Serving |
|---|---|
| Calories | 350 kcal |
| Protein | 4g |
| Fat | 18g |
| Carbohydrates | 45g |
| Fiber | 2g |
| Sugar | 30g |
| Sodium | 150mg |
Approximate values.
Frequently Asked Questions
Can I substitute the rhubarb with another fruit?
Yes, you can certainly experiment with other fruits. Apples, berries, or even a mix of fruits like strawberries and raspberries can be great alternatives. The baking time might need slight adjustment.
How do I know when the bars are done?
The rhubarb filling should be bubbly and set, not runny. The crust should be golden brown. Insert a toothpick; it should come out clean or with a few moist crumbs. Check the doneness carefully.
My filling is too runny. What went wrong?
Ensure that you have measured the cornstarch accurately. Overcooking the filling can also lead to it becoming too dry. Make sure to let the bars cool completely before frosting.
Can I make the crust and filling ahead of time?
Absolutely! You can bake the crust and prepare the filling a day ahead. Store them separately in the refrigerator. Then, assemble the bars just before serving to maintain the best textures and flavor.
How should I cut these bars for serving?
For neat slices, chill the bars completely before cutting. Use a sharp knife and wipe it clean between cuts. This method ensures clean edges and a more appealing presentation.
Conclusion
These homemade rhubarb bars with cream cheese frosting are a delightful treat that will impress everyone. They’re easy enough for novice bakers and delicious enough for any occasion. The combination of the tangy rhubarb and the rich frosting makes these unforgettable.
Don’t wait for rhubarb season to enjoy this dessert. Its comforting blend of flavors will brighten any day. These bars are a perfect balance of sweet and tangy and are sure to become a favorite.
Print
Easy Rhubarb Bars with Cream Cheese Frosting
- Total Time: 75
- Yield: 16 bars 1x
- Diet: Vegetarian
Description
These rhubarb bars feature a buttery crust, tangy rhubarb filling, and rich cream cheese frosting. Perfect for dessert lovers who enjoy sweet-tart contrasts. Novice bakers will appreciate the straightforward method and impressive texture. Affordable and accessible ingredients make this a seasonal staple.
Ingredients
3 cups all-purpose flour
1 1/2 cups salted butter, cold, cubed
1 1/2 cups granulated sugar, divided
2 large eggs
4 cups fresh rhubarb, chopped
3 tablespoons cornstarch
8 ounces cream cheese, softened
2 cups powdered sugar
Instructions
Preheat oven to 350°F (175°C)
Line a 13×9-inch baking pan with parchment paper
In a bowl, mix 3 cups flour, 1 1/2 cups granulated sugar, and 1 1/2 cups cold butter until crumbs form
Press one-third into prepared pan for the base
Bake for 15 minutes, remove from oven
In another bowl, toss rhubarb with 3 tablespoons cornstarch and 1/2 cup granulated sugar
Spread rhubarb mixture over cooled crust base
Return to oven and bake for 30 minutes or until filling is set
In a separate bowl, beat softened cream cheese until smooth. Gradually add 2 cups powdered sugar
Spread frosting over cooled bars
Sieve additional sugar over frosting for optional topping
Cut into 16 squares and serve
Notes
For a gluten-free crust, substitute 1 cup flour with almond flour
Use lemon zest to enhance rhubarb’s tart flavor
Frosted bars store best in the refrigerator
Toss crust with turbinado sugar before baking for sparkling texture
- Prep Time: 30
- Cook Time: 45
- Category: DESSERTS
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 bar
- Calories: 380
- Sugar: 35g
- Sodium: 120mg
- Fat: 17g
- Saturated Fat: 9g
- Carbohydrates: 58g
- Fiber: 1.2g
- Protein: 4g
- Cholesterol: 35mg