Scalloped Potatoes and Fennel

A luxurious layered dish of thinly sliced potatoes and fennel, baked in heavy cream with garlic and rosemary until golden brown and tender. This elegant gratin combines the earthy flavor of potatoes with the subtle anise taste of fennel.

8 servings

2 hr 30 min

Published October 4, 2025

Ingredients

•6 cloves garlic cloves, peeled, smashed
•4 sprigs fresh rosemary
•2¼ cups heavy whipping cream
•2½ teaspoons coarse kosher salt
•¾ teaspoon ground white pepper
•2 bulbs fresh fennel bulbs with fronds
•3½ pounds russet potatoes
•¼ cup unsalted butter
•cut into 1/2-inch cubes

Cooking Instructions

1.
Position rack in center of oven and preheat to 350°F. Butter 13x9x2-inch glass baking dish. Place garlic cloves and rosemary sprigs in bottom of prepared baking dish. Combine cream, coarse salt, and white pepper in large bowl.
10 min
2.
Cut off any stalks and fronds from fennel bulbs; discard stalks. Finely chop fennel fronds; cover and chill. Using V-slicer or mandoline, thinly slice fennel bulbs. Layer half of fennel slices evenly atop garlic and rosemary in baking dish. Peel potatoes and place immediately in large bowl of cold water to prevent discoloration. Working with 1 potato at a time, use a V-slicer or mandoline to thinly slice into rounds. Immediately add potatoes to bowl with cream mixture, turning to coat potatoes. Arrange half of potato slices evenly over fennel slices in baking dish, reserving cream mixture in bowl. Repeat layering with remaining fennel slices, then remaining potato slices. Pour cream mixture in bowl over fennel-potato mixture in baking dish. Dot with butter cubes. Cover baking dish with foil, doming foil slightly (do not allow foil to touch potatoes).
30 min
3.
Bake scalloped potatoes until almost tender when pierced with knife, about 1 hour 15 minutes. Increase oven temperature to 425°F. Remove foil and bake uncovered until potatoes are tender and top is deep golden brown, about 20 minutes longer. Remove from oven and let rest 15 minutes. Sprinkle with reserved fennel fronds and serve.
110 min

Cooking Instructions

Position rack in center of oven and preheat to 350°F. Butter 13x9x2-inch glass baking dish. Place garlic cloves and rosemary sprigs in bottom of prepared baking dish. Combine cream, coarse salt, and white pepper in large bowl.

10 min

Cut off any stalks and fronds from fennel bulbs; discard stalks. Finely chop fennel fronds; cover and chill. Using V-slicer or mandoline, thinly slice fennel bulbs. Layer half of fennel slices evenly atop garlic and rosemary in baking dish. Peel potatoes and place immediately in large bowl of cold water to prevent discoloration. Working with 1 potato at a time, use a V-slicer or mandoline to thinly slice into rounds. Immediately add potatoes to bowl with cream mixture, turning to coat potatoes. Arrange half of potato slices evenly over fennel slices in baking dish, reserving cream mixture in bowl. Repeat layering with remaining fennel slices, then remaining potato slices. Pour cream mixture in bowl over fennel-potato mixture in baking dish. Dot with butter cubes. Cover baking dish with foil, doming foil slightly (do not allow foil to touch potatoes).

30 min

Bake scalloped potatoes until almost tender when pierced with knife, about 1 hour 15 minutes. Increase oven temperature to 425°F. Remove foil and bake uncovered until potatoes are tender and top is deep golden brown, about 20 minutes longer. Remove from oven and let rest 15 minutes. Sprinkle with reserved fennel fronds and serve.

110 min