Preheat oven to 350 degrees; fully coat 9x9 inch baking pan with butter

With a mixer, combine butter and sugar until whipped, then add vanilla, egg and oil

In separate bowl, use spoon to combine baking powder and flour

Add 2 cups of the flour/baking powder mix to the whipped butter mix and create dough by combining with your hands

Take ⅔ of dough and spread edge to edge on the baking tray; prick dough with fork to prevent bubbles while baking

Spread 1 jar (or more) of Blake Hill’s Gooseberry & Wild Elderflower Jam over the entire dough on baking sheet

Take remaining dough and flour mix, and combine to make a crumb like texture

Sprinkle crumb topping over the Jam on baking sheet

Baked for 20 minutes or until the top is lightly golden brown

Let stand for 10 minutes then run a butter knife along inside edges of baking sheet to ensure jam is not sticking

Dust top with confectioners sugar before cutting

Wait a full 30 minutes to cut, trust us, it’s worth the wait - Enjoy!