Creamy Cheesy Onion & Potato Gratin Recipe | Affordable Dish with Aldi Ingredients #recipe #cheese

heavy cream

🥗Healthier: Greek yogurt

💰Cheaper: milk + cornstarch

Greek yogurt reduces calories while maintaining creaminess

cheddar cheese

🥗Healthier: reduced-fat cheddar

💰Cheaper: processed cheese

Reduced-fat cheddar lowers calories without losing flavor.

gruyere cheese

🥗Healthier: fontina cheese

💰Cheaper: mozzarella cheese

Fontina offers similar meltability at a lower cost.

butter

🥗Healthier: olive oil

💰Cheaper: margarine

Olive oil provides healthy fats with a similar cooking profile.

Heat butter in a pan, add finely sliced onions. Season and add dried thyme. Let this cook until the onions soften and caramelize.

Slice the potatoes very thinly (or use a mandoline). Grease the baking dish with butter, then create layers with potato slices and onions; repeat.

Make the white sauce by melting butter in a pan, add flour, let this cook for a minute, then gradually add milk. Repeat until the milk is gone and you have a thick, silky white sauce.

Add the grated cheeses (save a little for the topping), stir in mustard, and season with salt and pepper.

Pour the rich cheesy sauce over the potatoes, top with more cheese, then bake in the oven at 180°C for 45 minutes.

Cooking Techniques

Equipment Needed

Spice Level:

Allergens