In the bowl of a stand mixer fitted with the dough hook, stir together the all-purpose flour, granulated sugar, instant yeast and salt. Add the warm whole milk, butternut squash purée, egg, egg yolk and softened butter. Mix on low speed until a shaggy dough forms.
3¾ cup (450 g) all-purpose flour, ¼ cup (50 g) granulated sugar, 2¼ tsps (1 packet / 7 grams) instant rapid rise yeast, 1 tsp (6 g) table salt, ¾ cup (180 ml) warm whole milk, ½ cup (120 g) butternut squash purée, 1 large egg, 1 egg yolk, 5 tbsps (70 g) unsalted butter
Knead on medium-low speed for 8–10 minutes, until the dough is smooth, elastic and slightly tacky. If the dough remains sticky as it kneads, add additional flour 1 tablespoon at a time, allowing each addition to incorporate before adding more.
Transfer the dough to a lightly greased bowl, cover and let rise in a warm place for 60–90 minutes, or until doubled in size.
Stir together the brown sugar, cinnamon, nutmeg and salt in a small bowl. Set aside with the softened butter.
½ cup (100 g) light brown sugar, 2 tsps (5 g) ground cinnamon, ¼ tsp (0.5 g) ground nutmeg, ¼ tsp (1.5 g) table salt
Grease a 9 x 13-inch (23 x 33 cm) baking dish. Turn the risen dough onto a lightly floured surface and roll into a 16 x 12-inch (41 x 30 cm) rectangle.
Spread the softened butter evenly over the dough, then sprinkle the brown sugar mixture evenly over the butter. Beginning with one long side, roll the dough into a log. Cut into 12 even rolls and arrange them in the prepared baking dish. Cover and let rise for 30–45 minutes, or until visibly puffy.
4 tbsps (55 g) unsalted butter
Preheat the oven to 350°F (175°C).
Bake for 22–28 minutes, until golden and baked through in the center. If the tops are browning before the center rolls are done, loosely cover the baking dish with foil for the remainder of the baking time.
Remove from the oven and loosely cover the baking dish for 10–15 minutes to trap some of the steam while the rolls cool.
Beat the softened cream cheese and butter until smooth. Add the confectioners’ sugar, vanilla and 1 tablespoon (15 ml) whole milk or cream and beat until smooth. Add the remaining milk or cream as needed for a thinner glaze.
4 oz (113 g) full-fat cream cheese, 2 tbsps (28 g) unsalted butter, ¾ cup (90 g) confectioners' sugar, ½ tsp (2.5 ml) vanilla extract, 1-2 tbsps (15-30 ml) whole milk
Spread the cream cheese glaze over the warm cinnamon rolls. Garnish with toasted walnuts or pecans and maple syrup, if desired.
chopped toasted walnuts, maple syrup