Brussels Sprouts Nutrition Facts Brussels Sprouts Nutrition Facts   One cup of cooked Brussels sprouts provides (in recommended daily allowances):  56 calories 4 grams protein 4 grams fiber 274% vitamin K 162% vitamin C 24 % vitamin A 24% folate 18% manganese 14% potassium 14% vitamin B6 12% thiamine vitamin B1 10% iron 270 mg of omega-3 fatty acids