Make the pastry ahead and use any berries you have available, even frozen ones will do.
Warm the jam and brush a layer over the pastry (reserve some for later), then spread the frangipane on top. Scatter berries over the top and press them lightly into the mixture.
Bake for 30-35 until golden and cooked through. While the tart is warm, lightly brush to top with remaining strawberry jam or simply dust the top with icing sugar.
Serve as is or with extra berries and lemoncurd (pictured). Also nice served warm with ice cream or cream!