Can I make rhubarb oatmeal bars without sugar?

Yes! These keto rhubarb oatmeal bars use sugar substitutes like monk fruit or erythritol instead of regular sugar. You still get that sweet and tangy flavor without the carbs or sugar crash.

What can I use instead of oats in rhubarb bars for a low-carb diet?

For a keto-friendly version of rhubarb oat bars, shredded coconut, almond flour, and coconut flour are perfect swaps. They give you that oat-like texture and taste without the extra carbs.

Can I freeze keto rhubarb dessert oat bars?

Absolutely. These bars freeze well. Let them cool, slice them, and store with parchment paper between layers. Great for meal prep, quick snacks, or easy summer meals on the go.

Keto Rhubarb Oatmeal Bars That Don’t Taste Like Diet Food

Keto Rhubarb Oatmeal Bars Recipe

Print Recipe

These keto rhubarb oatmeal bars are packed with sweet and tart flavor, layered with a buttery almond crust, and topped with a coconut crumble. Think raspberry rhubarb crumble bars but low-carb, sugar-free, and ready for breakfast, dessert, or even a snack. Perfect for the keto diet, easy summer meals, or healthy dinner recipes with a sweet bite after.

Author: Jane Summerfield
Prep Time: 15 minutes
Cook Time: 35 minutes
Total Time: 50 minutes
Yield: 9–12 bars 1x
Category: Dessert
Method: Baking
Cuisine: American, Keto, Low-Carb
Diet: Gluten Free

Ingredients

Scale

Crust & Topping:

2 cups almond flour
1/2 cup coconut flour
1/2 cup unsweetened shredded coconut
1/2 tsp salt
1/2 cup butter, melted
1/2 cup sugar substitute (like monk fruit, erythritol)

Filling:

2 cups chopped rhubarb (fresh or frozen)
1/2 cup raspberries (optional)
2 tbsp lemon juice
1/2 cup sugar substitute
1/8 tsp xanthan gum or 2 tsp chia seeds

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Instructions

Preheat oven to 350°F (175°C). Line an 8×8 or 9×9 baking pan with parchment paper.
In a large bowl, mix almond flour, coconut flour, shredded coconut, salt, melted butter, and sugar substitute.
Press 2/3 of the mix into the bottom of the pan. Bake for 10 minutes, then set aside.
In a small saucepan, cook rhubarb, raspberries, lemon juice, sugar substitute, and xanthan gum until thick and soft. Let cool for a few minutes.
Spread the filling over the baked crust. Crumble the remaining crust mix on top.
Bake again for 20–25 minutes or until the top is golden. Let cool fully before cutting.

Notes

Use strawberries instead of raspberries for a more classic rhubarb strawberry cobbler Taste of Home vibe. These bars freeze well. Great for DIY ideas or meal prep. Best rhubarb desserts don’t need sugar, just good texture and balance.

Please note: The recipe or ingredients shown in the video might vary slightly from what’s listed here. Use the video as an illustration, but for the best results, you might want to stick to the recipe provided in this article.

Nutrition

Serving Size: 1 bar
Calories: 210 Sugar: 1g Sodium: 70mg Fat: 18g Saturated Fat: 7g Unsaturated Fat: 10g Trans Fat: 0g Carbohydrates: 7g Fiber: 3g Protein: 4g Cholesterol: 25mg

Find it online: https://www.wellnesswarrior.org/keto-rhubarb-oatmeal-bars/