Step 1

Preheat oven to 400 and line an 8-inch square baking pan with nonstick foil.

Step 2

Combine 2 cups of flour, 1/2 cup of sugar, baking powder, and salt. Pour the flour into your food processor, add 1/3 cup of butter and process until it looks like fine crumbs.

Step 3

Transfer the flour butter mixture to a mixing bowl, add the egg and milk and stir it up until everything is just combined.

Step 4

Spoon batter into the prepared pan. Spoon the jam over the batter, then swirl through the batter with a knife.

Step 5

Mix the all topping ingredients except for the walnuts until crumbly, stir in the walnuts and sprinkle evenly over batter.  (You can mix the brown sugar, flour and butter in the food processor and then stir in the nuts – that makes mixing this topping up super easy!)

Step 6

Bake at 400° for 30 to 35 minutes, until done. Let it cool for about an hour, then cut into squares and serve.