Prosciutto, spinach and mushroom baked eggs

Healthy and delicious, put away the cereal in favour of these easy-to-make baked eggs.

Ingredients:

• 80g butter
• 200g mushrooms, thinly sliced
• 100g baby spinach leaves
• 4 slices prosciutto, finely chopped
• 8 eggs, lightly beaten
• ½ cup cheese, grated