Cheesy Potatoes Au Gratin

INGREDIENTS

2 tbsp

Butter

Small Onion ((finely diced))

Garlic Cloves ((minced))

lbs Yukon Gold or Russet Potatoes ((peeled and thinly sliced, about 1/8"))

3 cups

Heavy Cream

1 cup

Whole Milk

1 tsp

Thyme

2 tsp

Salt

1 tsp

Pepper

2 cups

Sharp Cheddar Cheese ((grated))