Indulge in comfort food at its finest with this irresistible "Potatoes and Onions and Cheese Oh My" recipe—a rich, cheesy casserole that’s destined to become a family favorite. Perfectly thin russet potatoes are layered with sweet, golden caramelized onions and sharp cheddar cheese, then bathed in a creamy garlic-thyme sauce for a decadent dish bursting with flavor. This baked delight features a crisp, golden topping while staying irresistibly creamy inside, making it the ultimate side dish for a cozy dinner or a holiday feast. With its simple ingredients and classic flavors, this recipe offers a modern twist on scalloped potatoes, delivering hearty, flavorful bites in every forkful. Whether it’s a special occasion or a weeknight indulgence, this dish is easy to prepare and sure to impress.
Preheat your oven to 375°F (190°C).
Wash, peel, and thinly slice the russet potatoes into rounds, about 1/8-inch thick. Use a mandoline slicer for best results if available.
Peel the onions and slice them into thin rings.
Finely mince the garlic cloves.
Heat a skillet over medium heat and add the olive oil and 1 tablespoon of unsalted butter. Add the onions and cook, stirring frequently, until they are caramelized and golden brown, about 15 minutes. Set aside.
In a saucepan over low heat, melt the remaining 1 tablespoon of butter. Add the minced garlic and cook for 1 minute until fragrant. Stir in the heavy cream, salt, pepper, and fresh thyme. Heat until warm but not boiling.
Grease a 9x13-inch baking dish. Arrange a layer of potato slices on the bottom of the dish, slightly overlapping each slice.
Spread a portion of the caramelized onions evenly over the potatoes and sprinkle with a handful of shredded cheddar cheese.
Repeat this layering process—potatoes, onions, cheese—until all the ingredients are used up. Finish with a final layer of cheese on top.
Pour the warm cream mixture evenly over the layers, ensuring it coats everything.
Cover the baking dish with aluminum foil and bake in the preheated oven for 30 minutes.
Remove the foil and bake for an additional 20 minutes, or until the potatoes are tender and the top is golden and bubbly.
Allow the dish to cool for 5 minutes before serving. Enjoy!
Calories |
3315 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 190.9 g | 245% | |
| Saturated Fat | 112.7 g | 564% | |
| Polyunsaturated Fat | 1.3 g | ||
| Cholesterol | 544 mg | 181% | |
| Sodium | 4076 mg | 177% | |
| Total Carbohydrate | 302.6 g | 110% | |
| Dietary Fiber | 26.5 g | 95% | |
| Total Sugars | 26.8 g | ||
| Protein | 95.2 g | 190% | |
| Vitamin D | 0.0 mcg | 0% | |
| Calcium | 1882 mg | 145% | |
| Iron | 15.0 mg | 83% | |
| Potassium | 7207 mg | 153% | |
*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.