Broccoli mustard pasties

Quick puff pastry

• 300 g unsalted butter cut into small pieces (1-2 cm) and frozen
• 300 g plain flour plus extra for dusting
• 140 g chilled water

Broccoli mustard pasties

• 180 g cheddar cheese cut into cubes (3-4 cm)
• 150 g mozzarella cheese cut into cubes (3-4 cm)
• 80 g brown onion cut into halves
• 1 garlic clove
• 100 g swede peeled and cut into quarters
• 20 g olive oil
• 1 tsp English mustard plus extra to serve
• 2 tsp Dijon mustard plus extra to serve
• 300 g broccoli broken into florets
• 1 pinch salt to taste
• 1 egg lightly beaten
• 3 tsp poppy seeds