Instead of using jam for the filling in these crumble bars, I cooked down a few frozen strawberries with some water and vanilla and blended them up. It’s an extra step, but it gives this treat a fresher taste. The crumble is made from spelt flour and oats. Watch 4 Amazing Things to Bake with Spelt Flour.
Add strawberries, water, and vanilla to a small saucepan. Bring to a boil, then lower and simmer until liquid thickens and strawberries are soft, about 15 minutes. Blend slightly using an immersion blender, leaving the mixture a little chunky.
Meanwhile preheat oven to 350 degrees Fahrenheit. Line a nine- by 13-inch baking pan with Gefen Parchment Paper.
Combine all crumble ingredients. Press three-fourths of the mixture into the prepared pan. Spread strawberry filling over crumble. Sprinkle remaining crumble on top. Bake for 30–40 minutes.
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