Spinach, Feta, and Pumpkin Muffins

Ingredients

• 2 cups wholemeal plain flour
• 1 tsp bicarbonate of soda
• 50 g baby spinach leaves, chopped
• 80 g mushrooms, finely chopped
• 2 spring onions, finely sliced
• 100 g feta, roughly chopped
• ¼ cup grated cheddar
• 2 eggs
• 200 g Greek yoghurt
• 1 cup mashed pumpkin
• 50 g butter, melted