Preheat oven to 180°C. Line 2 oven trays with baking paper.
Place butter, water, salt and sugar into the Thermomix bowl. Heat 3 min/90°C/speed 3.
Add oats and pecans. Combine 6 sec/speed 6. Continue if pecans haven't chopped enough.
Tip out dough onto a silpat mat. Bring together to form a ball.
Place the dough between 2 sheets of baking paper, roll out as thinly as possible. Using a pizza cutter or scone cutter, cut dough into desired shapes.
Sprinkle generously with pink salt flakes and gently roll over with rolling pin to help the salt adhere.
Place crackers on to the prepared trays and bake for 15-18 minutes until just starting to brown.
Serve on a cheeseboard or grazing platter.