Combine yeast, warm water and brown sugar in a small bowl and allow to sit and bubble up for 5 to 10 minutes.Add remaining ingredients and knead either by hand or using a dough hook attachment of your mixer for about 7 minutes. You should have a smooth and elastic dough. Cover and allow to rest at room temperature until doubled in size about an hour. If your oven has a proofing mode, set it to 100 degrees Fahrenheit, which should reduce the proofing time to 30 minutes.
500 grams all-purpose flour, 7 grams active dry yeast, 15 grams brown sugar, 30 grams butter, 10 grams salt, 275 milliliter water