Italian prune plum squares

We were very lucky to have another bumper crop of blue Italian prune plums this year, but what to do with the ones still in the freezer from last year?

I love date squares but find them super sweet, so adjusted my mother-in-law's Matrimonial Bliss recipe to these delicious plum squares.

Crispy bottom crust, gooey plum layer and topped with almond crumble crust.

Preheat oven to 400 F and line an 8x8 cake pan with parchment paper.

Oat mixture:

1/2 c butter

1/2 c brown sugar

1/2 c gluten-free flour

1 c rolled oats 

1/2 c quinoa flakes

Pinch of salt

Break this up with a pastry knife until crumbly. Pack about 2/3 of this mixture into the bottom of an 8 X 8 pan. Press it down a little so it's even and bake at 400 F for about 20 minutes until starting to brown.
Turn the oven down to 350 F.

Plums:
Place a single layer of fully defrosted plums cut side down on the crust. (be generous)

Topping:
To the remaining 1/3 of the oat mixture, add
1/3 c of sliced almonds
1 tsp cinnamon
Spread this topping evenly over the plums.
Place in the oven and bake about 25 - 30 minutes at 350. (if the plums are fresh instead of frozen, you should cook this dessert about 20 minutes longer.)