Zucchini and Dark Chocolate Brownie

Zucchini and Dark Chocolate Brownie is a medium French recipe that serves 8. 300 calories per serving. Recipe by Hervé Cuisine on YouTube.

Prep: 27 min | Cook: 20 min | Total: 1 hr 2 min

Cost: $7.00 total, $0.88 per serving

Ingredients

  • 150 g Baking dark chocolate (70% cocoa, good quality)
  • 150 g Zucchini (Peeled, ends removed, finely grated)
  • 150 g Flour (gluten‑free if desired) (Gluten‑free blend recommended, otherwise all‑purpose flour)
  • 2 pcs Eggs (Large eggs)
  • 75 g Light brown sugar (Soft cane sugar)
  • 75 g Sucrine (sucrine‑stevia blend) (Zero‑calorie product, half sugar half sucrine)
  • 2 g Vanilla powder (Or 1 tsp vanilla extract)
  • 50 g Toasted hazelnuts (Coarsely chopped, reserve some for topping)
  • 1 pinch Fleur de sel (About 1 g)
  • 30 g Cacao nibs (Add crunch, sourced from Brazil)

Instructions

  1. Melt the chocolate

    Place the dark chocolate in a heat‑proof bowl and melt it over a bain‑marie or in the microwave (2 min, stirring halfway) until smooth.

    Time: PT2M

  2. Prepare the zucchini

    Peel the zucchini, remove both ends, then finely grate (about 150 g).

    Time: PT5M

  3. Whisk eggs and sugars

    Break the two eggs into the bowl, add 75 g light brown sugar and 75 g sucrine, then whisk until the mixture becomes frothy and pale.

    Time: PT5M

  4. Add vanilla and melted chocolate

    Stir in the vanilla powder (or extract) then pour the slightly warmed melted chocolate, mixing gently until a smooth batter forms.

    Time: PT2M

  5. Fold in the grated zucchini

    Add the grated zucchini to the batter and fold it in gently with a spatula.

    Time: PT1M

  6. Add flour and hazelnuts

    Sift 150 g flour (gluten‑free if desired) into the mixture, add 50 g coarsely chopped toasted hazelnuts and a pinch of fleur de sel, then mix just enough to incorporate.

    Time: PT3M

  7. Pour and smooth

    Butter or line a 20 cm square pan with parchment paper, pour the batter in and smooth the surface with a spatula.

    Time: PT2M

  8. Top the brownie

    Sprinkle the top of the brownie with the remaining cacao nibs, reserved hazelnuts and a light pinch of fleur de sel.

    Time: PT2M

  9. Bake the brownie

    Place the pan in the preheated oven at 180 °C and bake for 20 minutes. The centre should remain slightly molten.

    Time: PT20M

    Temperature: 180°C

  10. Cool and cut

    Let the brownie cool in the pan for 10 minutes, then unmold and cut into squares.

    Time: PT10M

Nutrition Facts

Calories
300
Protein
6 g
Carbohydrates
35 g
Fat
15 g
Fiber
3 g

Dietary info: vegetarian, gluten‑free option, low‑sugar, no‑butter, low-calorie

Allergens: gluten, nuts, eggs

Ingredient Substitutions

  • Instead of Baking dark chocolate: Couverture chocolate, Semi-sweet chocolate
  • Instead of Zucchini: Grated carrot, Apple sauce (for moisture)
  • Instead of Flour (gluten‑free if desired): All‑purpose flour, Almond flour (adjust amount)
  • Instead of Eggs: Flax egg (1 tbsp + 3 tbsp water) for vegan version
  • Instead of Light brown sugar: Coconut sugar, Whole cane sugar
  • Instead of Sucrine (sucrine‑stevia blend): Erythritol, Monk fruit blend
  • Instead of Vanilla powder: Vanilla bean (seeds), Vanilla extract
  • Instead of Toasted hazelnuts: Roasted almonds, Pecans
  • Instead of Fleur de sel: Coarse sea salt, Kosher salt
  • Instead of Cacao nibs: Dark chocolate chips

Equipment Needed

  • Bain‑marie or microwave
  • Coarse grater
  • Mixing bowl
  • Whisk or electric mixer
  • Silicone spatula
  • 20 cm square pan
  • Oven
  • Parchment paper (optional) (optional)

Critical Steps — Do Not Skip

  • Melt the chocolate
  • Add vanilla and melted chocolate
  • Bake the brownie

Chef Tips from the Video

  • Use chocolate with 70% cocoa or higher for an intense flavor
  • Grate the zucchini just before incorporating to prevent it from losing moisture
  • Toast the hazelnuts 10‑12 minutes at 180 °C for a stronger aroma

Troubleshooting

The brownie is too dry

Check the baking time; reduce to 15‑18 minutes or add 1‑2 tablespoons of applesauce for more moisture.

The centre remains liquid after the stated time

Extend baking by 3‑5 minutes and loosely cover the top with foil to prevent over‑browning.

The brownie crumbles when cutting

Allow it to cool completely (at least 20 minutes) and use a large serrated knife slightly dampened.

Storage

Refrigerator: Store in an airtight container, up to 5 days.

Freezer: Wrap each portion in plastic film then place in a freezer bag, up to 2 months.

Room temperature: At room temperature, up to 2 days, kept away from moisture.

Make-Ahead Tips

  • The brownie keeps very well; it can be made the day before and gently reheated before serving
  • Portions can be frozen individually for a quick snack
  • Pre‑toast the hazelnuts ahead of time to save time

Last updated: September 6, 2026

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Zucchini and Dark Chocolate Brownie

Recipe by Hervé Cuisine

A moist and indulgent brownie, butter-free and reduced in sugar, where zucchini adds moisture and lightness. Coated with dark chocolate, toasted hazelnuts and cacao nibs for an irresistible crunch.

MediumFrenchServes 8

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Source Video
32m
Prep
20m
Cook
10m
Cleanup
1h 2m
Total

Cost Breakdown

$7.00
Total cost
$0.88
Per serving

Critical Success Points

  • Melt the chocolate
  • Add vanilla and melted chocolate
  • Bake the brownie

Safety Warnings

  • Melted chocolate is very hot; handle with care to avoid burns
  • Use oven mitts when removing the hot pan
  • The grater is sharp; watch your fingers