Cheesy Scalloped Potatoes

Arrange a rack in center of oven; preheat to 400°. In a large skillet over medium heat, cook bacon, stirring occasionally, until crispy, about 8 minutes. Transfer to paper towels to drain.

Meanwhile, in another large skillet over medium heat, melt butter. Add garlic and cook, stirring, until fragrant, about 1 minute. Stir in flour and cook until lighter in color and fragrant, about 1 minute more. Whisk in cream and broth; season with salt and pepper. Bring to a simmer and cook, stirring occasionally, until thickened slightly, about 5 minutes. Remove from heat.

Peel potatoes, then thinly slice each potato crosswise into thin coins. (A mandoline would work great here.)

Spoon a thin layer of sauce into bottom of a large oval casserole or 13" x 9" baking dish. Arrange a single layer of potatoes on top. Spoon more sauce over potatoes. Top with cheese and bacon. Repeat 3 to 4 times, or until dish is mostly full.

Bake scalloped potatoes until sauce is bubbly and potatoes are very tender, about 1 hour 15 minutes. Let cool at least 15 minutes before serving.