Preheat the oven to 350 degrees F. Shave the Brussels sprouts crosswise into 1/8-inch-thick slices with a sharp knife or mandoline. In a large bowl, combine the Brussels sprouts, cheddar, flour, thyme and garlic; season with salt and pepper and toss to combine. Transfer the mixture to an 8-inch-square baking dish, packing it in. Pour the heavy cream evenly on top.
In a small bowl, combine the panko, parmesan and olive oil and pour over the Brussels sprout mixture. Bake, uncovered, until the Brussels sprouts are tender, the sauce is bubbling and the top is golden brown, 25 to 30 minutes. Garnish with the parsley.
Photograph by Ryan Liebe
Recipe courtesy of Guy Fieri for Food Network Magazine