Addicted to crumble- Berry Crumble Slice

I think I'm addicted to crumble. Actually to rephrase I'm addicted to Heidi's crumble topping featured in her cookbook Super Natural Everyday. It's actually so amazing that I've eaten it straight from the bowl, freezer, during baking, sneaking it from other peps' plates- it's addictive. In the past week I made 2 batches and used it to cover baked peaches, ice-cream and this berry crumble slice. The only adjustments I make are adding a handful of shredded coconut and using a little less sugar.

Berry Crumble Slice

Base

125g dairy-free spread (I use Nuttlex's olive oil spread) or butter
1/2 cup raw sugar
1 1/2 cups Self-Raising flour
1/2 teaspoon cinnamon

Centre

2 Tbsp Berry Jam
1 cup frozen berries, or enough to cover the base

Topping

Heidi's crumble topping featured here

Preheat the oven to 170 degrees Celcius, fan-forced.
Cream butter and sugar until light and fluffy.
Mix flour into creamed mixture.
Bake for 15 mins.

Remove from oven and base to cool for 5-10 mins.
Top with a layer of jam and enough berries to cover the base and the crumble topping.

Bake until the crumble is golden.