Stir-fry greens with tofu

Ingredients

• ¼ cup vegetable stock, salt reduced
• 2 tbs sweet chilli sauce
• 2 tbs mushroom oyster sauce
• 1 tsp sesame oil
• 2 tsp olive oil
• ⅓ cup raw cashews
• 1 red onion, cut in thin wedges
• 2 garlic cloves, crushed
• 2-3cm piece ginger, peeled and finely chopped
• 1 bunch asparagus, trimmed and cut into 5cm pieces
• 1 bunch baby bok choy, trimmed, stems chopped and leaves separated
• 100g snow peas, trimmed
• 200g firm tofu, drained and cut into 1cm cubes
• steamed brown rice to serve