Roasted Cauliflower with Mustard Sauce & Caramelized Onions

Name: Roasted Cauliflower with Mustard Sauce & Caramelized Onions
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: Italian
Ingredients: 1 large cauliflower (about 1 kg/2 lb 4 oz), cut into 2 cm (¾ in) slices; fine sea salt; freshly ground black pepper; 2 large onions (about 400 g/14 oz), finely sliced; 1 tsp caster (superfine) sugar; 2 tbsp dijon mustard; 1 tbsp rice vinegar; 1 tbsp maple syrup; 1 tbsp lemon juice; 1 garlic clove, minced; 2 tbsp vegetable oil; 2 tsp capers, finely chopped; pinch of white pepper

Preparation info

Serves
4

Difficulty
Easy
Ready in
40 min

Appears in

Veganissimo!

By Antonio Alderuccio

Published 2025

About

This recipe might even make carnivores reconsider their preferences. To ensure success, make sure the cauliflower is cooked just right. The combination of tangy mustard and sweet, caramelized onions complements the natural nuttiness of the cauliflower, creating a dish that’s not only satisfying but also packed with flavour.

Ingredients

For the cauliflower:

1 large cauliflower (about 1 kg/2 lb 4 oz

Europe
Italy
Main course
Vegan

Method

Preheat the oven to 180°C fan/200°C/400°F/Gas 6. Line a baking sheet with parchment paper.

Arrange the cauliflower slices on the lined baking sheet. Brush with the vegetable oil and season with salt and black pepper.