Preheat oven to 350 degrees. Grease an 8 inch square pan with butter or non-stick cooking spray

Lightly crush cinnamon cereal in bowl with your hands

Combine cereal, rolled oats, flour, brown sugar, cinnamon, salt and baking soda in a large bowl

Add the softened butter into the bowl and combine with your hands until you have a crumbly mixture.

Set aside 3/4 cup of the mixture for the topping. Press the remaining mixture into the bottom of the pan, pack fairly tightly.

Spread the blueberry jam over the crumble layer

Add the rest of the crumble to the top and press lightly into the blueberry jam

Bake for 35 minutes or until moderately browned

Allow to cool for 30 minutes before cutting to serve.

Store refrigerated in an airtight container for up to a week; reheat to serve if desired.