Method
- Set the oven to 350°F. Peel and thinly slice the sweet potatoes. Trim the cauliflower and chop into thick slices. Make a cut in the chorizo, peel off the skin, and cut into small pieces. Alternate the sweet potato, cauliflower, and chorizo in the mold.
- Melt the butter in the pan. Add the milk and beat until smooth. Pour in the milk, bring to the boil while stirring, then simmer on a low heat for about 3 minutes. Remove from heat and mix in two-thirds of the cheese. Season with salt and pepper to taste.
- Pour the sauce over the vegetables in the mold. Top with the rest of the cheese. Bake in the middle of the oven for 35-40 minutes until the gratin feels soft. Take out and allow to cool.
Serving suggestion: boiled rice
When the gratin is ready and has cooled, it can be easily frozen and then reheated in the Omnia mold.