Prepare peas according to on-pack preparation instructions.
Heat oil in a large saucepan over medium heat. Add onion and cook for 5 minutes until softened. Add garlic and cook for 30 seconds. Add broccoli stems, potato, celery, stock and peas and bring to the boil. Cook, stirring occasionally, for 20 minutes or until peas are tender.
Add the broccoli florets and cook for 3-5 minutes until just cooked. Remove from heat.
Use a stick blender to blend until smooth.
Serve soup with a dollop of yoghurt and sprinkle of toasted seeds.
Nutritional facts: The rich protein and fibre content of pulses can help you feel fuller for longer.