I made this dessert for Bryn and Greg when I was out there for the arrival of new baby. We enjoyed the recipe. I'm putting my adaptations for what we had on hand. The original recipe called for raspberry jam and raspberries. I used dairy free butter. I also plan to try this with some apricot jam instead of peach preserves (because that's what I now have on hand).
1 1/4 cups flour1 1/4 cups old-fashioned rolled oats
3/4 cup brown sugar
1/2 tsp salt
1/2 tsp baking soda
1 1/2 tsp cinnamon
3/4 cup cold butter cubed
8 oz peach preserves
3/4 cup frozen triple berry blend
In a large bowl, combine the flour, oats, brown sugar, salt, baking soda, and cinnamon. Mix together until evenly combined. Add pieces of butter and work into the dry ingredients using hands or a pastry cutter. Squeeze butter and dry mixture between fingers until the mixture becomes like wet sand with pieces of butter the size of peas and smaller. Pour two cups of the crumb mixture into the prepared baking dish. Lightly press to form an even crust.
Spread peach preserves over the crust. Sprinkle with frozen berries. Top with remaining crumb mixture. Do not press crumbs, just sprinkle over the top.
Bake in the preheated oven until the top turns slightly browned and puffed in the middle, 30-35 minutes. Remove from the oven and cool for at least four hours before slicing.