1. Pie crust: Soften butter, mix with other ingredients to form a dough, let it rest for 20 minutes before rolling out and covering the pie dish, prick holes in the bottom.

2. Walnut crumb: Soften butter, beat with sugar until fluffy, add flour and walnut pieces, rub together into crumbs.

3. Raspberry filling: Cut strawberries into pieces, melt butter, mix with milk, sugar, and salt, then add flour and stir well, followed by egg and continue stirring, finally add raspberry pieces.

4. Pour the raspberry filling into the prepared pie crust dish, spread the walnut crumb on top, bake in a preheated ovenat middle rack 180 degrees for 35 minutes.Baking tip