Grandma Bonnie's Cinnamon Rolls

Ingredients

• • 2 cups warm water
• • 2 (.25 ounce) packages active dry yeast
• • ½ cup white sugar, divided
• • ¼ cup vegetable oil, or more as needed
• • 1 large egg
• • 2 teaspoons salt
• • 6 ½ cups all-purpose flour, or more as needed
• • ½ cup unsalted butter, melted
• • ½ cup white sugar, or more to taste
• • ¼ cup ground cinnamon, or more to taste
• • ½ cup chopped pecans, or to taste
• • Topping:
• • 1 cup powdered sugar
• • 2 tablespoons unsalted butter, melted
• • ½ teaspoon vanilla extract
• • 1 tablespoon milk, or more as needed
• • 2 tablespoons chopped pecans, or to taste