Step 1

Preheat oven to 350F. Butter a 7 x 11 inch tart pan with a removable bottom, and set aside.

Step 2

In the bowl of a food processor, add the flour, brown sugar, salt, cinnamon, nutmeg, butter, and vanilla extract.

Step 3

Pulse until the ingredients are combined, and continue to pulse until the dough comes together into a single clump.

Step 4

Reserve about 1 cup of the shortbread dough for topping the crumble bars, and crumble the rest into your prepared baking pan.

Step 5

Press the dough evenly into the bottom of the pan with your fingers.

Step 6

Spread the strawberry jam evenly over the dough.

Step 7

Mix the reserved dough with the rolled oats, and crumble evenly over the jam layer. Some of the strawberry filling will show through, and that's good.

Step 8

Bake for about 35-40 minutes until just starting to turn golden brown on the edges.

Step 9

Allow to cool before removing from the pan and slicing. Note: shortbread is quite soft right out of the oven, and will firm up as it cools.