Apple Crumble Cake

Name: Apple Crumble Cake
Prep time: 20 min
Cook time: 1 h 10 min
Total time: 1 h 30 min
Cuisine: European, British
Ingredients: 70 g unsalted butter, chilled, diced, plus extra for greasing; 75 g blanched almonds; 75 g plain flour; 50 g Demerara sugar; 400 g eating apples, peeled, cored and sliced (0.5 cm slices); 20 g lemon juice; 100 g granulated sugar; 100 g unsalted butter, diced; 2 large eggs (60 g size); 100 g self-raising flour; 40 g flaked almonds, for decorating