– 8 slices bacon Adds smoky, salty flavor and a crisp topping.

– 2 1/2 pounds gold potatoes Gives the casserole its soft, buttery base.

– 3/4 cup mayonnaise Creates the creamy coating that helps the potatoes bake up rich and tender.

– 6 ounces mild yellow cheddar cheese Brings the classic cheesy finish, with some mixed in and the rest melted on top.

– 4 cloves garlic Adds savory depth that balances the richness.

– 1 tablespoon Dijon mustard Gives a subtle tang that keeps the flavor from feeling too heavy.

– 1/2 teaspoon kosher salt Helps season the potatoes evenly.

– 1/2 teaspoon freshly ground black pepper Adds a little bite and warmth.

– 1 tablespoon finely chopped fresh chives Adds a fresh, bright finish right before serving.