Preheat oven to 350 degrees. Line a large baking sheet with foil, and spray it with non-stick cooking spray.

In a small bowl combine cinnamon and sugar. Set aside.

Pour cereal into a large bowl.

In a saucepan over medium heat melt together butter, brown sugar and corn syrup until mixture comes to a boil. Boil for one minute stirring constantly. Remove from heat and stir in baking soda. The mixture will foam up.

Pour mixture over cereal and carefully stir until cereal is well coated.

Spread the coated cereal evenly on the baking sheet. Sprinkle with cinnamon sugar mixture, flipping it over halfway through the mixture, to coat the other side.

Bake for 5 minutes, flip the mixture over and bake for 3 minutes more. The cereal will be a golden brown.

Remove from oven, cool completely and store in an airtight container.