Fleming’s Potatoes Copycat
Table of Contents
If you’ve ever dined at a high-end steakhouse, you know the sides often steal the show and Fleming’s Potatoes are no exception. This creamy, cheesy potato bake is the ultimate comfort food: rich layers of thinly sliced potatoes, leeks, and jalapeños baked in a luxurious cream sauce until golden and bubbling.
This homemade version perfectly captures the flavor and texture of the famous steakhouse side dish — no reservations required! It’s easy enough for weeknights yet elegant enough for holidays or dinner parties.
What Are Fleming’s Potatoes?
Fleming’s Potatoes are a signature steakhouse-style side dish featuring thin slices of russet potatoes baked in a velvety cheese and cream sauce. The dish balances rich flavors from cheddar and Monterey Jack cheeses with subtle sweetness from leeks and a mild kick from jalapeños.
Unlike traditional scalloped or au gratin potatoes, Fleming’s version has a smoother, creamier texture and a deeper, savory flavor. This copycat recipe recreates all that goodness at home using simple pantry ingredients — no fancy equipment or hard-to-find ingredients needed.
Why This Recipe Stands Out
- Ultra-Creamy & Cheesy: Every slice is coated in a silky cheese sauce made with heavy cream, cheddar, and Monterey Jack.
- Perfectly Tender Potatoes: Thinly sliced russets bake to a melt-in-your-mouth texture.
- Balanced Flavor: The leeks add a gentle sweetness while diced jalapeños give just the right amount of warmth.
- Steakhouse Quality, Made at Home: Impress your guests with a side dish that looks and tastes restaurant-level but is surprisingly easy to make.
Ingredients & Substitutions
All the ingredients you’ll need to make creamy, steakhouse-style Fleming’s potatoes
| Ingredient | Amount | Notes / Substitutions |
| Russet potatoes | 3 pounds | Peeled and thinly sliced — Yukon Golds also work. |
| Jalapeños | 3 tbsp, finely diced | Remove seeds for mild heat or add more for spice. |
| Leeks | 4 oz, thinly sliced | Substitute with yellow onions if unavailable. |
| Kosher salt | 1 ½ tsp | Adjust to taste. |
| Black pepper | 1 tsp | Freshly cracked for best flavor. |
| Butter | 1 ½ oz | Unsalted preferred. |
| Heavy cream | 2 cups | Substitute half with milk for a lighter version. |
| Half & half | 1 ½ cups | You can use all heavy cream for richer sauce. |
| Cheddar cheese | 4 oz, grated | Sharp or extra-sharp adds depth. |
| Monterey Jack cheese | 4 oz, grated | Melts beautifully and adds mild creaminess. |
Allergen Note: Contains dairy. For a lighter or lactose-free option, use plant-based cream and cheese substitutes.
Equipment & Tools You’ll Need
- 9×13-inch casserole dish or individual ramekins
- Mandoline slicer or sharp knife
- Large skillet or sauté pan
- Mixing bowls
- Foil for covering during baking
Step-by-Step Instructions
1. Prep Your Dish
Grease a 9×13-inch baking dish with butter or nonstick spray. If you want to serve individual portions, use small ramekins — just reduce bake time slightly.
2. Slice the Potatoes
Peel and thinly slice your russet potatoes using a mandoline for consistent thickness. Even slices ensure the dish cooks uniformly and achieves that classic melt-in-your-mouth tenderness.
3. Clean and Slice the Leeks
Cut off the dark green tops and root ends. Slice the leeks lengthwise and rinse under cold water to remove grit. Use only the white and light green parts, sliced thinly.
4. Sauté the Aromatics
In a large skillet, melt butter over medium-high heat. Add jalapeños, leeks, salt, and pepper, and cook for about 4–5 minutes until softened and fragrant. The aroma will be savory and slightly sweet.
5. Make the Creamy Cheese Sauce
Pour in the heavy cream and half & half, then bring the mixture to a gentle simmer. Stir frequently so it doesn’t scorch. Once warm, remove from heat and add the cheddar and Monterey Jack cheeses, stirring until smooth and velvety.
6. Layer the Potatoes and Sauce
Add a layer of sliced potatoes to the prepared dish, followed by a ladle of cheese sauce. Repeat the process — layer, sauce, layer — finishing with a final coating of sauce on top.
7. Bake to Perfection
Cover the dish with foil and bake at 350°F (175°C) for 1 hour. Then uncover and bake for an additional 15–20 minutes until the top turns golden brown and bubbling. Let it rest for at least 10 minutes before serving to allow the sauce to thicken.
Complement Fleming’s Potatoes with our Easy Swamp Potatoes Recipe – Slow Cooker or Stovetop for a tasty side dish.
Serving Suggestions & Pairings
This side dish is the perfect partner for:
- Grilled or pan-seared steak
- Roasted chicken or turkey
- Baked salmon
- Green sides like asparagus, broccoli, or salad
Serve it directly from the casserole dish or spoon into ramekins for an elegant touch. Garnish with chopped chives or parsley for color and freshness.
Variations & Flavor Twists
- Add Bacon: Mix in crispy bacon bits for smoky depth.
- Add Garlic: Sauté minced garlic with the leeks for extra aroma.
- Herb It Up: Try thyme, rosemary, or parsley.
- Switch the Cheese: Swap in Gruyère or Swiss for a more nutty flavor.
- Adjust Heat: Use poblano or omit jalapeños entirely for a milder version.
Storage, Make-Ahead & Reheating Tips
- Make Ahead: Assemble the dish (unbaked), cover tightly with foil, and refrigerate for up to 24 hours.
- Refrigerate Leftovers: Store in an airtight container for up to 3 days.
- Reheat: Warm in a 350°F oven for 15–20 minutes or microwave single portions.
- Freeze (Optional): Wrap cooled portions tightly and freeze for up to 1 month. Thaw overnight before reheating.
Troubleshooting & FAQ
Why is my sauce watery?
You may have added too much liquid or not let the dish rest. Allow it to cool for 10 minutes before serving for a thicker sauce.
Why are my potatoes still firm?
Slices may have been too thick or uneven. Use a mandoline for consistent cuts and ensure full bake time.
Can I skip the jalapeños or leeks?
Yes! The dish still tastes amazing — just less spicy and slightly less sweet.
Can I make it lighter?
Use milk instead of half & half and reduce the cheese slightly for a lighter texture.
What are Fleming’s potatoes?
A creamy, cheesy steakhouse-style potato side dish with thinly sliced potatoes, leeks, and jalapeños.
What are the 4 ingredients in au gratin potatoes?
Potatoes, cheese, cream (or milk), and butter.
How many calories are in Fleming’s mashed potatoes?
Approximately 410 calories per serving.
What type of steak is best at Fleming’s?
Their signature ribeye or filet mignon are top choices.
Nutritional Information (Approx. per Serving)
- Calories: 410
- Protein: 10g
- Carbs: 28g
- Fat: 30g
- Allergens: Contains dairy
Tips from the Experts
- Slice potatoes 1/8 inch thick for even cooking.
- Always let the dish rest before serving — this allows the sauce to set.
- Sprinkle a bit of extra cheese on top before baking for that perfect crust.
- Use freshly grated cheese instead of pre-shredded for smoother melting.
Final Thoughts
This Fleming’s Potatoes Copycat Recipe brings a touch of restaurant luxury to your dinner table — without the cost or complexity. It’s indulgent, comforting, and guaranteed to impress whether you’re serving steak, chicken, or a festive holiday roast.
Once you try it, you’ll understand why this dish has become a steakhouse legend — and now your new family favorite.
Fleming’s Potatoes Copycat Recipe: Steakhouse Style
Equipment
- 9×13-inch casserole dish or individual ramekins
- Mandoline slicer or sharp knife
- Large skillet or sauté pan
- Mixing bowls
- Foil for covering during baking
Ingredients
- Russet potatoes 3 pounds
- Jalapeños 3 tbsp finely diced
- Leeks 4 oz thinly sliced
- Kosher salt 1 ½ tsp
- Black pepper 1 tsp
- Butter 1 ½ oz
- Heavy cream 2 cups
- Half & half 1 ½ cups
- Cheddar cheese 4 oz grated
- Monterey Jack cheese 4 oz grated
Instructions
- Prep Your Dish
- Grease a 9×13-inch baking dish with butter or nonstick spray. If you want to serve individual portions, use small ramekins — just reduce bake time slightly.
- Slice the Potatoes
- Peel and thinly slice your russet potatoes using a mandoline for consistent thickness. Even slices ensure the dish cooks uniformly and achieves that classic melt-in-your-mouth tenderness.
- Clean and Slice the Leeks
- Cut off the dark green tops and root ends. Slice the leeks lengthwise and rinse under cold water to remove grit. Use only the white and light green parts, sliced thinly.
- Sauté the Aromatics
- In a large skillet, melt butter over medium-high heat. Add jalapeños, leeks, salt, and pepper, and cook for about 4–5 minutes until softened and fragrant. The aroma will be savory and slightly sweet.
- Make the Creamy Cheese Sauce
- Pour in the heavy cream and half & half, then bring the mixture to a gentle simmer. Stir frequently so it doesn’t scorch. Once warm, remove from heat and add the cheddar and Monterey Jack cheeses, stirring until smooth and velvety.
- Layer the Potatoes and Sauce
- Add a layer of sliced potatoes to the prepared dish, followed by a ladle of cheese sauce. Repeat the process — layer, sauce, layer — finishing with a final coating of sauce on top.
- Bake to Perfection
- Cover the dish with foil and bake at 350°F (175°C) for 1 hour. Then uncover and bake for an additional 15–20 minutes until the top turns golden brown and bubbling. Let it rest for at least 10 minutes before serving to allow the sauce to thicken.
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