simplerecipes:

Roasted Brussels Sprouts

1 lb Brussels sprouts
2-3 medium shallots, peeled and sliced
3 tbsp olive oil
salt
pepper
1 tbsp butter (optional)
1/2 lemon, juice of

Preheat oven to 425F. Trim the base of the Brussels sprouts with a knife. Peel off the outer leaves and cut the sprouts in half. Toss sprouts, shallots, olive oil, salt, and pepper together. Pour into a large enough baking pan so that there is a single layer of sprouts on the pan. Roast for 15 minutes and remove from oven to toss the sprouts around. Roast another 15 minutes and repeat. Roast a final 10 minutes and remove from oven (total time should be about 40 minutes). Stir the butter into the sprouts and then add the lemon juice and toss. Serve hot.

via use real butter