Big Giant Cinnamon Rolls

Name: Big Giant Cinnamon Rolls
Prep time: 1 h
Cook time: 25 min
Total time: 1 h 25 min
Cuisine: American
Ingredients: 1 cup (240ml) buttermilk*; 2/3 cup (135g) granulated sugar; 1 and 1/2 tablespoons (14g) active dry yeast (2 standard size packets); 1/2 cup (115g) unsalted butter, softened to room temperature and cut into 4 pieces; 2 large eggs, at room temperature; 1/2 teaspoon salt; 4 and 1/2 cups (563g) all-purpose flour (spoon & leveled), plus more for dusting/rolling; 6 Tablespoons (90g) unsalted butter, softened to room temperature; 1/2 cup (100g) granulated sugar; 1 and 1/2 Tablespoons ground cinnamon; 2 ounces (about 1/4 cup or 56g) full-fat cream cheese, softened to room temperature; 2 Tablespoons (28g) unsalted butter, softened to room temperature; 1 and 1/4 cups (150g) confectioners’ sugar; 1/2 teaspoon pure vanilla extract