Best Ever Cinnamon Buns Recipe

Ingredients

• 2 (.25 ounce) packages active dry yeast
• 2 1/2 cups warm water (110 degrees F)
• 1 (18.25 ounce) package yellow cake mix
• 6 cups all-purpose flour, divided
• 3 eggs
• 1/3 cup vegetable oil
• 1 1/2 teaspoons salt
• 1/2 cup butter, softened
• 4 tablespoons white sugar
• 2 tablespoons ground cinnamon
• 1/4 cup butter, melted
• 3 cups confectioners' sugar
• 1 1/2 teaspoons vanilla extract
• 2/3 cup milk