Sweet Churro Cheerios start with caramel-coated toasted oat cereal that gets drizzled in white chocolate and coated in cinnamon sugar. It's an explosion of churro flavor with a totally addictive, crunchy texture and just the right amount of sweetness!
PREP: Assemble all the ingredients. Line one extra-large (15x21-inch) or 2 large cookie sheets with parchment paper or a Silpat liner and set aside. Measure and pour the cereal in a very large bowl (large enough to toss with other ingredients without spilling-- I use the largest bowl I have!) Preheat the oven to 250 degrees F.
CARAMEL SYRUP: In a pot over medium heat, add the butter, corn syrup, brown sugar, and fine sea salt. Stir until the butter is melted and then bring to a boil. Let fully boil for 5 minutes (still over medium heat) without stirring. Remove from the heat and stir in the baking soda and vanilla extract. Watch out-- the vanilla may sputter a bit and the mixture will foam up a lot! Immediately pour this mixture over the prepared cereal in the bowl. Working as quickly as possible, toss with a wooden spoon to combine and cover the cereal in the caramel syrup mixture.
BAKE: Spread the coated cereal on the prepared cookie sheet(s) in one even layer. Bake for 1 hour, stirring every 15 minutes with a spatula and then spreading the cereal again in one even layer. Remove the pan(s) and allow the mixture to completely cool.
CINNAMON-SUGAR: In a small bowl, combine the white sugar and cinnamon. Stir and set aside.
WHITE CHOCOLATE: Melt white chocolate chips and vegetable oil in a microwave-safe bowl in bursts of 30 seconds, stirring in between each burst for 15 seconds until the chocolate is melted and smooth. Transfer melted white chocolate to a plastic bag and seal the bag without air in it. Cut off the tip of the bag and pipe this melted white chocolate over the cereal (it may seem like too much, but we want the cereal well coated!) As soon as the cereal is covered in white chocolate, sprinkle the cinnamon-sugar mixture evenly over everything.
ENJOY: Let the cereal harden at room temperature, about 1 hour, and then break up and put in a large bowl. Enjoy!