Delish Roasted Cauliflower

Roasted cauliflower is much better than basic steamed or boiled cauliflower -- slightly nutty-tasting, and the texture is much better. This recipe makes it very tasty:

1 large or 2 small heads of cauliflower, broken into florets
2 tbsp melted butter
Zest from one lemon
Juice from 1/2 a lemon
1 1/2 tsp dijon mustard
Salt and pepper

Roast cauliflower in a 400-degree oven for 20 minutes. Mix all other ingredients and pour over the cauliflower, then roast for about 15 more minutes. Terribly easy, very quick, tastes lemony and good.