4 1/2 cups biscuit baking mix
1 1/3 cups milk
2 tablespoons softened butter
1/4 cup sugar
1 teaspoon cinnamon
2 cups powdered sugar
2 tablespoons milk
2 tablespoons melted butter
2 teaspoons vanilla extract

Heat oven to 450°F. Grease large baking sheet. Combine biscuit mix and milk. Turn out onto floured surface and knead gently 8-10 times. Roll into 12x10 inch rectangle. Spread with butter. Combine sugar and cinnamon and sprinkle over butter. Roll up, starting with long side and pinch seam to seal. Cut into 12 slices and place cut sides down on prepared baking sheet. Bake 10-12 minutes till golden brown. Combine remaining ingredients till smooth. Spread over warm rolls and serve warm.