Dinner · Part 1 of 3: Ingredients
Slow-Cooker Garlic Rosemary Fondant Potatoes

- Prep
- Cook
- Total
- Serves
- 4
Elevate your dinner table with these slow-cooker garlic rosemary fondant potatoes. This method takes the classic technique of slow-basting potatoes in butter and broth and simplifies it for a hands-off approach that delivers restaurant-quality results every single time. Perfect for a steakhouse-style dinner at home, these potatoes are tender, flavorful, and incredibly impressive to serve.
Fondant potatoes are traditionally prepared by searing them in a pan and braising them in butter and stock. By using a slow cooker, the potatoes braise gradually, allowing the beef bone broth to reduce into a rich, glossy glaze while the centers turn pillow-soft.
This recipe yields a sophisticated, savory side dish that pairs beautifully with roasted meats, poultry, or even as a standalone vegetarian main course when served alongside a crisp, fresh green salad.
Ingredients
- 2 lb Russet potatoes, cut into thick cylinders
- 4 tbsp unsalted butter
- 4 cloves garlic, crushed
- 2 sprigs fresh rosemary
- 1 cup beef bone broth
- flaky sea salt, for serving
Why this recipe works
The slow cooker environment provides a gentle, consistent heat that allows the potatoes to absorb the savory essence of the beef bone broth and aromatic herbs without falling apart.
As the liquid slowly evaporates and reduces over the three-hour cooking window, it concentrates into a flavorful velouté that coats each potato cylinder in a luxurious, buttery shine, creating that signature fondant texture.
By arranging the potatoes in a flat, single layer, you ensure that every piece receives direct heat and exposure to the braising liquid. This arrangement is crucial for achieving the characteristic golden-brown edges while keeping the interiors creamy and soft.
The slow-cooking process eliminates the need for constant monitoring, allowing the flavors of the garlic and rosemary to infuse deeply into the starch of the potatoes.
Notes and substitutions
Russet potatoes are the ideal choice for this recipe because their high starch content allows them to hold their shape while becoming exceptionally tender during the slow-cooking process.
If you prefer a slightly different flavor profile, Yukon Gold potatoes are an excellent substitute, though they may soften faster and provide a creamier, more buttery mouthfeel than the starchier Russet variety.
When selecting your beef bone broth, choose a high-quality version to ensure the final glaze has depth and complexity. The quality of your butter also plays a significant role in the final result, as it forms the emulsified sauce that coats the potatoes. Fresh rosemary is essential for providing the woodsy, aromatic lift that balances the richness of the butter and the savory depth of the broth.
- Beef bone broth: Vegetable broth or chicken stock for a lighter flavor profile.
- Russet potatoes: Yukon Gold potatoes for a creamier, less starchy texture.
Equipment
- Slow cooker
- Chef's knife
- Cutting board
- Serving platter
Up next · Part 2 of 3
3 steps · 3 h of cooking · what to look for at each stage
Step-by-step instructions (Part 2)