Proper Potato Bake | Shannon's Recipes | Umami

Ingredients

• 1-1.5kg potato's, peeled and sliced
• 3 tablespoons butter
• 3 tablespoons plain flour
• 2 cups milk
• 500g shredded cheese (measure with your heart honestly)
• 1 tablespoon Dijon mustard
• 300g chopped bacon
• 1 brown onion, diced