Broccoli Mac and Cheese

• 500 g dry pasta
• 3 tbsp extra virgin olive oil
• 1 large head of broccoli, chopped into small floretes
• 2 400g tinned cannellini beans, drained
• 2.5 cup light milk
• 1.5 tbsp flour
• 2.5 tsp vegetable stock powder
• 1 cup cottage cheese
• 2 cup shredded cheddar cheese
• 0.25 tsp pepper