This side dish is basically a hug in casserole form, and it's got my mama’s fancy French fingerprints all over it! She studied at the Cordon Bleu in France (no big deal, right?), and her obsession with French onion soup was legendary. Like, simmering onions for an hour kind of legendary. But I’m here to tell you - we’ve taken all those deep, rich, caramelized vibes and turned them into the easiest, creamiest, most budget-friendly potato bake of your dreams!

This dish is the perfect glow-up for humble potatoes. We’re talking layers of tender slices, cozy onion flavor from that magic dry soup mix (thank you, pantry staple!), and a blanket of bubbling cheese that makes you feel like you just paid $16 for a side at a fancy steakhouse. But guess what? You didn’t. You made it at home in your jammies with a whisk in one hand and a glass of wine in the other. Winning!

Here’s how to bring this decadent little beauty to life:

Ingredients:

• 2–3 large potatoes (about 3 cups), peeled and sliced super thin
• 1 yellow onion, sliced into rings
• 1 cup heavy cream
• 1 oz packet dry onion soup and dip mix
• ⅓ cup grated parmesan cheese
• 1 tablespoon fresh parsley, chopped (because we're fancy like that)

Kitchen Stuff You’ll Need:

• Measuring cups & spoons
• Cutting board + knife
• 8x8 or 9x9 casserole dish
• Medium bowl
• Whisk
• Aluminum foil

Let’s Bake!

Preheat your oven to 400°F and grease that casserole dish like you mean it.

Peel and slice the potatoes paper thin - think scalloped potato level. Slice up that onion and chop your parsley while you’re at it.

In a medium bowl, whisk together the heavy cream and dry onion soup mix. Smells amazing already, right?

Time to layer: half the potatoes, half the onions, half the creamy mix… repeat that deliciousness and finish it off with parmesan cheese sprinkled on top.

Cover with foil and bake for 20 minutes. Then, remove the foil and let it bake another 15 minutes until those potatoes are tender and the top is golden and bubbly.

Sprinkle with fresh parsley and let it hang out for about 5 minutes before serving (yes, it’s hard to wait, but worth it!).

Tips & Twists:

• Budget Queen Move: Use whatever potatoes you’ve got! Russets, Yukon golds, whatever’s lurking in the pantry.
• Don’t Do Dairy? Sub in a plant-based cream and use nutritional yeast instead of parmesan. It’s still dreamy!
• Wanna Beef It Up? Add a layer of shredded rotisserie chicken or sautéed mushrooms for a heartier spin.
• Make-Ahead Magic: Assemble it earlier in the day, then bake when you're ready - perfect for holiday chaos or just a Tuesday night you want to feel fancy.

Yield: 6

French Onion Potato Bake

Print

French Onion Potato Bake is a rich and savory side dish made with layers of tender potatoes, creamy sauce, and caramelized onion flavor. Baked until golden and bubbling with cheese, it’s the perfect blend of comfort and elegance.

Prep Time 15 minutes

Cook Time 35 minutes

Additional Time 5 minutes

Total Time 5 minutes

Ingredients

• 2-3 large potatoes (about 3 cups), peeled and sliced very thin
• 1 yellow onion, sliced into rings
• 1 cup heavy cream
• 1 oz packet dry onion soup and dip mix
• ⅓ cup grated parmesan cheese
• 1 tablespoon fresh parsley, chopped

Instructions

1. Preheat the oven to 400 degrees. Grease the casserole dish.
2. Peel and cut your potatoes, onion, and parsley.
3. Stir the heavy cream and onion soup mix together in a medium bowl.
4. Layer half the potatoes, then half the onions.
5. Pour half the cream mixture over the potatoes and onions, then repeat and top with parmesan cheese.
6. Cover with aluminum foil and bake for 20 minutes.
7. Remove the aluminum foil, bake for an additional 15 minutes, until potatoes are tender.
8. Sprinkle with parsley, and allow to set for 5 minutes then serve.

Nutrition Information:

Yield:

6

Serving Size:

1
Amount Per Serving: Calories: 209Total Fat: 20gSaturated Fat: 12gUnsaturated Fat: 7gCholesterol: 60mgSodium: 105mgCarbohydrates: 4gFiber: 0gSugar: 2gProtein: 5g

This French Onion Potato Bake is what happens when simple ingredients meet serious flavor. It’s rich, savory, and just oozes comfort with every bite. Whether you’re hosting a dinner party or just need something to jazz up grilled chicken, this is the side dish that shows up and shows off - with zero stress!

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