Place half the cereal and pretzels in a large bowl and the other half of the cereal and pretzels in another large bowl.

Melt butter in a large pot; add Karo syrup and sugar. Heat together over medium and bring to a boil.

Boil for two minutes then pour evenly over the cereal in each bowl.

Stir together then add mini marshmallows and M&M’s. Spread over two greased cookie sheets and add sprinkles over top. Allow to cool, then place in a large bowl to serve.