I made this yesterday, it tastes so yummy! If you would like to try it, here's the recipe:
In a pan, 2 tbsp of Butter, add ½ cup of breadcrumbs, then lemon zest and stir until golden brown. In a bowl, 4 tbsp of lemon juice, 2 cloves of garlic, 1 tbsp of dijon mustard, ¾ cup of olive oil, ½ cup of parmesan cheese, salt and pepper. Stir until well combined. Then add your cooked spaghetti, some parsley, your breadcrumbs (that you cooked earlier). Mix them all together and enjoy!