Ultimate scalloped potatoes recipe

Ingredients

• 1 teaspoon Butter
• 1 large Garlic clove peeled
• 1 cup Whipping cream
• 1/3 cup Whole milk
• 1 teaspoon Salt
• 1/8 teaspoon Ground pepper
• 2 pounds Potatoes peeled and cut into 1/8" slices
• 1 cup Gruyere coarsely shredded
• 1/4 cup Parmesan finely grated