In the large bowl of a stand mixer, combine the lukewarm milk, yeast, egg, sugar, lemon zest, melted butter, and salt. Whisk it together by hand until it gets foamy.
1 ½ cups whole milk, 2 ¼ teaspoons instant yeast, 1 large egg, 3 tablespoons granulated sugar, 2 teaspoons lemon zest, ½ teaspoon salt, 3 tablespoons unsalted butter
Add the flour then use the stand mixer with a dough hook attachment to knead the dough for 3 minutes. (If you don't have a stand mixer, use a spatula to mix until a dough forms. Then, turn the dough out onto a surface dusted with flour and knead by hand for 5 minutes.) To test the dough, gently touch it with a clean, dry finger. It should feel a little tacky but shouldn't stick to your finger. If it does stick, add flour a tablespoon at a time until it no longer sticks to your finger. Take care not to add too much flour.
3½ to 4¼ cups bread flour
Lightly oil a bowl, place the dough in it and coat it lightly with the oil. Cover the bowl with plastic wrap and leave it in a warm spot to rise until it doubles in size. This will take about an hour, depending on the temperature.
olive oil
Once the dough has risen, turn it out on to a lightly floured surface. With a floured rolling pin, roll the dough into a large rectangle, roughly 16 inches by 12 inches.
Combine the sugar and lemon zest in a bowl and mix well.
¾ cup granulated sugar, 1½ tablespoons lemon zest
Dot the soft butter all over the dough then use the back of a spoon or an offset spatula to spread it into an even layer across the entire surface of the dough.
5 tablespoons unsalted butter
Evenly sprinkle the lemon-sugar mixture on top of the butter.
Starting with the long side facing you, tightly roll the dough rectangle into a long log shape. Pinch the seam closed with your fingers. To make cutting easier, cut the log of dough in half.
Use a sharp knife or dough cutter to cut each half of the dough into 6 equal pieces. You will have 12 pieces total.
Grease a 9”x13” baking dish with 1 tablespoon of melted butter. Place the rolls in the dish, leaving a little space between each one.
1 tablespoon unsalted butter
Cover the dish with plastic wrap and put it somewhere warm to rise again. The rolls will puff up and become close together during this time. The second rise will take 45-60 minutes depending on the temperature. (See notes for making overnight.)
Preheat your oven to 350°F.
Once the lemon rolls have puffed up, take off the plastic wrap and brush them with one tablespoon of melted butter. Bake for 28 to 30 minutes. Check on the rolls after 25 minutes. If they're not golden brown yet, bake for an additional 5-10 minutes, or until golden brown. If they are brown but not yet cooked, tent with foil and continue baking.
Take the rolls out of the oven and set them aside.