Healthy Rhubarb Protein Pie
Finding a dessert that actually tastes good while still fitting your goals can feel difficult sometimes. That’s exactly why we love this Healthy Rhubarb Protein Pie. It gives you the comforting flavor of a classic homemade pie while keeping the ingredients lighter and more balanced.
Rhubarb naturally has a tart flavor, which makes it perfect for desserts because it adds freshness without needing tons of sugar. Instead of loading this pie with refined sugar and heavy ingredients, we used Greek yogurt, protein powder, and a wholesome oat crust to create something that feels satisfying without becoming overly rich.
This recipe works especially well during spring and summer when rhubarb is in season, but honestly, we would make it any time of year. The filling stays creamy and fruity, the crust has a hearty texture, and every slice gives you a little extra protein compared to a traditional pie.
We also love that this recipe feels realistic for everyday eating. You can enjoy a slice after dinner, keep leftovers in the fridge for meal prep desserts, or even pair it with Greek yogurt for a higher-protein snack during the day.
The Best Part About This Pie
A lot of healthier desserts miss the balance between flavor and texture. Some become too dry, while others taste overly artificial from sweeteners or protein powder. This pie avoids that problem.
The oat crust stays soft while still holding together well, and the rhubarb filling keeps its natural tart flavor instead of becoming overly sweet. The Greek yogurt helps create a creamy texture, while the vanilla protein powder blends smoothly into the filling without overpowering the pie.
The optional oat crumble topping also adds texture and gives the pie a more homemade bakery-style finish. Every layer brings something different, which keeps the recipe interesting from the first bite to the last.
Gather Your Ingredients
For the Crust
- 1 ½ cups oat flour or whole wheat flour (can use GF)
- ¼ cup melted coconut oil or light butter
- 1 large egg
- 1 tablespoon maple syrup or honey
- 1–2 tablespoons cold water
- Pinch of sea salt
For the Filling
- 3 cups chopped fresh rhubarb
- 1 scoop vanilla protein powder
- ½ cup nonfat plain Greek yogurt
- ¼ cup maple syrup, honey, or sweetener of choice
- 2 tablespoons chia seeds (optional)
- 1 teaspoon vanilla extract
- 1 tablespoon arrowroot starch or cornstarch
- 2 tablespoons water
Optional Crumble Topping
- ¼ cup rolled oats
- 2 tablespoons almond flour
- 1 tablespoon melted coconut oil
- 1 teaspoon cinnamon
- 1 teaspoon honey or maple syrup
How to Make Healthy Rhubarb Protein Pie
1. Prepare the Crust
Preheat your oven to 350°F (175°C). Add the oat flour and sea salt to a mixing bowl, then pour in the melted coconut oil. Stir until the texture looks crumbly.
Add the egg and maple syrup, then mix until a dough forms. If the dough feels dry, add cold water a little at a time until it holds together easily.
Press the dough evenly into a 9-inch pie dish, covering the bottom and sides. Use a fork to prick small holes across the base so the crust bakes evenly. Bake for 10 minutes, then let it cool slightly while you prepare the filling.
2. Cook the Rhubarb Filling
Add the chopped rhubarb to a saucepan over medium heat along with the water and sweetener. Stir frequently while the rhubarb softens and starts breaking down slightly.
After about 7 minutes, remove the pan from the heat and stir in the vanilla extract. If you want extra fiber and a thicker filling, add the chia seeds at this stage.
Let the mixture cool for a couple of minutes before mixing in the Greek yogurt and protein powder. This helps keep the texture smooth. In a small bowl, stir together the arrowroot starch and water, then add it to the filling mixture.
Taste the filling before moving on. If you prefer a sweeter pie, add a little extra sweetener, but keep in mind that rhubarb should still taste slightly tart.
3. Assemble the Pie
Pour the filling into the pre-baked crust and spread it evenly with a spatula.
For the crumble topping, mix together the oats, almond flour, cinnamon, melted coconut oil, and honey in a small bowl. Sprinkle the mixture across the top of the pie.
The crumble adds texture and gives the pie a golden finish once baked.
4. Bake the Pie
Bake the pie for 22 to 25 minutes at 350°F (175°C).
The center should look mostly set, while the crust edges become lightly golden. If you added the crumble topping, it should look lightly toasted as well.
Avoid overbaking because the filling continues to thicken while cooling.
5. Cool and Serve
Let the pie cool completely before slicing. This step makes a big difference because the filling firms up as it cools.
We like serving this pie chilled with an extra spoonful of Greek yogurt on top. It also works really well with fresh berries or a scoop of high-protein vanilla ice cream if you want a more dessert-style serving option.
Store leftovers covered in the refrigerator for up to 4 days. The flavor actually gets even better the next day once everything settles together.
Nutrition Facts
| Nutrient | Amount Per Serving |
| Serving Size | 1 slice (1/8 of pie) |
| Calories | 185 kcal |
| Protein | 11 g |
| Carbohydrates | 19 g |
| Sugars | 6 g |
| Fiber | 4 g |
| Total Fat | 7 g |
| Saturated Fat | 3 g |
| Sodium | 60 mg |
Nutrition values are estimated and listed per serving based on 8 total slices.
Why We Keep Making This Recipe
This Healthy Rhubarb Protein Pie proves that balanced desserts can still feel comforting and satisfying. The tart rhubarb filling, creamy texture, and hearty oat crust all work together without feeling overly heavy or sugary.
We keep coming back to this recipe because it feels practical for real life. You get a homemade dessert that tastes fresh and satisfying while still adding protein and fiber to your day.
If you want something different from the usual protein bars or baked oats, this pie is definitely worth trying.
Healthy Rhubarb Protein Pie
Equipment
- 9-inch ceramic pie dish
- Mixing bowls
- Saucepan
- Wooden spoon
- Measuring cups and spoons
- Spatula
- Oven
Ingredients
For the Crust:
- 1 ½ cups oat flour can use GF
- ¼ cup melted coconut oil or light butter
- 1 large egg
- 1 tbsp maple syrup or honey
- 1 –2 tablespoons cold water
- Pinch of sea salt
For the Filling:
- 3 cups fresh rhubarb chopped
- 1 scoop vanilla protein powder
- ½ cup nonfat plain Greek yogurt
- ¼ cup maple syrup honey, or sweetener of choice
- 2 tbsp chia seeds optional
- 1 tsp vanilla extract
- 1 tbsp arrowroot starch or cornstarch
- 2 tbsp water
Optional Crumble Topping:
- ¼ cup rolled oats
- 2 tbsp almond flour
- 1 tbsp melted coconut oil
- 1 tsp cinnamon
- 1 tsp honey or maple syrup
Instructions
- Preheat the oven to 350°F (175°C). Mix oat flour and sea salt in a bowl. Stir in melted coconut oil, egg, and maple syrup until a dough forms. Add cold water if needed. Press the dough firmly into a 9-inch pie dish, making sure it follows the edges of the dish. Prick the bottom with a fork and bake for 10 minutes.
- Add chopped rhubarb, sweetener, and water to a saucepan over medium heat. Cook for about 7 minutes until softened but still chunky. Stir in vanilla extract and chia seeds if using.
- Let the rhubarb cool slightly, then mix in Greek yogurt and vanilla protein powder. Stir together arrowroot starch and water in a small bowl, then mix it into the filling until combined.
- Pour the filling into the pre-baked crust and spread evenly. For the crumble topping, mix rolled oats, almond flour, coconut oil, cinnamon, and honey together, then lightly scatter over the pie.
- Bake for 22–25 minutes until the crust is lightly golden and the filling is mostly set. Let the pie cool completely before slicing.
Notes
- Use certified gluten-free oat flour to make the recipe gluten-free.
- Let the pie cool fully before slicing for the best texture.
- Store leftovers covered in the refrigerator for up to 4 days.
