
This beautiful citrus tart showcases a natural ombré effect created by layered citrus slices. The bright, candied oranges provide a tart contrast to the creamy vanilla mascarpone filling, all nestled in a tender peanut butter enriched crust.
This showstopping dessert always causes a moment of hesitation before the first slice - guests are reluctant to disturb the beautiful citrus pattern. But once tasted, it quickly disappears.
Key Ingredients
- Mixed Oranges - Select three varieties for the ombré effect: sweet navel oranges, juicy regular oranges, and deep red blood oranges
- Mascarpone - Use high-quality mascarpone, brought to room temperature for optimal texture
- Peanut Butter - Choose smooth, unsweetened for best texture and flavor
Preparation Steps
- 1. Preparing the Citrus
- Slice oranges very thinly using a mandoline
- Begin candying with the lightest colored oranges
- Cook until translucent but still holding shape
- Drain carefully on paper towels
- 2. Making the Base
- Whip eggs and sugar until ribbon stage
- Gradually incorporate peanut butter
- Add fresh orange zest for flavor
- 3. Assembly
- Arrange orange slices from center outward
- Create harmonious spiral with color gradients
- Pour batter carefully to maintain pattern
This tart has become a treasured family recipe for special occasions. The key to success lies in patiently candying the citrus slices to perfection.
Perfecting the Cream
For the smoothest mascarpone cream, whip the mascarpone until silky before gently folding in the whipped cream.
Syrup Technique
Reserve the citrus cooking syrup to brush over the finished tart. This adds moisture and intensifies the citrus flavors.

Texture Balance
The layered textures - tender candied citrus, moist cake, and silky cream - create an exceptional tasting experience.
Timing Guide
Prepare this tart a day ahead. Overnight refrigeration allows flavors to fully develop.
This elegant tart celebrates Mediterranean citrus groves through its vibrant colors. While time-consuming to prepare, the stunning presentation and complex flavors make it well worth the effort.
Frequently Asked Questions
- → Can I prepare the candied oranges ahead of time?
- Absolutely, you can make them up to a week ahead and store them in their syrup in the fridge.
- → Is it okay to swap out the peanut butter?
- You can replace it with melted plain butter or a mild vegetable oil in the same amount.
- → What’s the trick to getting the best gradient effect?
- Start arranging the orange slices from the lightest to the darkest for a seamless transition of colors.
- → How long will this cake stay fresh?
- It stays good in the fridge for about 3 days, though the orange visuals are most vibrant on the first day.
- → Can this cake be frozen?
- Freezing is not recommended, as it can ruin the texture of the candied oranges and mascarpone.