Pre-heat oven to 180℃
Peel and core the 1.2 kg granny smith apples. Slice into ⅛ or cut into cubes. Place in bowl of cold water with 1 tsp salt.
Toast the 100 g pecans in oven for 5 min. Cool and roughly chop
Drain the apples. Add the 50 g brown sugar to a large sauce pan and add the apples, ½ lemon juice and zest, 1 tsp cinnamon. Cook for about 5 minutes - 10 minutes until the apples are soft, but still hold their shape. Remove from heat and cool. Taste to ensure you are happy with their desired sweetness.
Melt the 100 g butterin the microwave
Wet a clean tea towel and place on the countertop laying it spread out and flat. Place 1 sheet of 250 g phyllo pastry and brush with the melted 100 g butter. Lay another sheet on top of that sheet of phyllo and repeat the process of brushing with melted butter. Repeat until all the phyllo has been used.
Sprinkle 2 Tbls of brown sugar on top of buttered phyllo leaving a 2cm border around the edge of the pastry
Sprinkle the toasted pecans on top of the sugar
Add the apples on top of the nuts and an optional knob of butter
Fold in the sides of the pastry border. Use the tea towel to roll up the strudel. Place onto a baking sheet lined with baking paper and bake in pre heated oven at 180℃ for 45 min. Serve with whipped cream