Biscuit Cinnamon Rolls

Ingredients

• 3 cups all-purpose flour
• 2 tablespoons granulated sugar
• 3 teaspoons baking powder
• 1 teaspoon baking soda
• 3/4 teaspoon salt
• 1/2 cup unsalted butter, cold and cut into cubes
• 1/4 cup vegetable, cold and cut into cubes
• 1 egg, beaten
• 3/4 cup buttermilk, cold
• 1 teaspoon pure vanilla extract
• 1/4 cup granulated sugar
• 1/4 cup brown sugar
• 1 teaspoon ground cinnamon
• 1/2 teaspoon fresh ground nutmeg (optional)
• pinch of salt
• 2 tablespoons unsalted butter, melted plus a bit more for topping the biscuits before baking