Preheat oven to 180C fan-forced and line a large baking tray with baking paper.
To make the pangrattato, place sourdough, parsley, garlic clove, lemon rind, hazelnuts and 1 tsp of sea salt flakes in a food processor and process until coarse. Pour in 1/4 cup of avocado oil and blitz until crumbs are well coated. Empty out onto a lined baking tray and bake for 12-15 minutes or until golden and crispy. Set aside.
Cook spaghetti according to instructions. Chargrill broccolini on a grill plate for 5-8 minutes or until just cooked.
To assemble toss cooked pasta with remaining avocado oil, squeeze of lemon juice and pangrattato. Check seasoning. Add broccolini, burrata and finish with basil leaves.