Crunchy caramel ice cream slice

Pecan crumble

• 70 g plain flour (see Tips)
• ½ tsp baking powder (see Tips)
• 60 g brown sugar
• 80 g pecans
• 60 g salted butter, cut into pieces
• ½ - 1 tsp ground cinnamon

Caramel sauce

• 4 gelatine sheets (titanium)
• cold water, for soaking
• 80 g unsalted butter, cut into pieces
• 160 g thickened cream
• 100 g dark brown sugar
• 1 tsp vanilla bean paste
• 60 g pure icing sugar (see Tips)
• 4 eggs, separated
• 300 g pouring (whipping) cream