Wild Berry Jam Slice

"This jam slice is the perfect mix of sweet and tart jam, buttery, oaty brown sugar crumble topping and a thick (but not too thick) buttery base layer of oats. And the best part is that it all comes together in one hour including baking time! Okay. This jam slice is somewhere between jam slice and the North American crumble bar. Please humour me. It's worth it. We're skipping jam from a jar and going with homemade. That means less sugar and the perfect balance of tart and sweet. I would never say that these were healthy, but no one would judge you for having one of these for breakfast! A simple list of ingredients, no special equipment and the perfect sweet snack for getting the kids involved in making. You're gonna need to be making these for sure! "