Slow-Cooker Lemon-Garlic Chicken Breast

Tender chicken, plenty of garlic, and a silky lemon sauce make this slow-cooker chicken the kind of dinner I’m always happy to come home to. Serve it warm with mashed potatoes, rice, or a good piece of crusty bread for soaking up every last spoonful of that buttery lemon-garlic sauce.

There’s something especially comforting about a dinner that spends most of the afternoon quietly cooking away. This one starts with a quick sear on the chicken, but after that, the slow cooker does most of the work. As the chicken cooks with lemon juice, broth, and smashed garlic cloves, all those simple flavors come together into a savory, citrusy cooking liquid.

And don’t overlook that liquid! At the end, it becomes one of my favorite parts of the recipe. A little butter and flour transform it into a smooth, rich lemon-garlic sauce that you can spoon generously over the tender chicken.

It’s simple enough for a weeknight, but once everything is arranged on a platter and covered with sauce and fresh parsley, it feels like a dinner worth lingering over.

Why You’ll Love This Recipe

I love this recipe because it turns a short list of familiar ingredients into a dinner that feels so satisfying. Lemon keeps everything bright, while the garlic slowly mellows as it cooks and gives the sauce plenty of savory flavor.

The chicken is also wonderfully hands-off. You’ll spend a few minutes browning it at the beginning, then let it cook on LOW for 3 to 4 hours. That little bit of work up front is worth it—the golden sear gives the chicken an extra layer of flavor before it ever reaches the slow cooker.

But really, the sauce is what brings everything together. It’s buttery and lemony, with all that slow-cooked garlic mixed in, and it’s just begging to be served with something that can soak it up.

Slow-Cooker Lemon-Garlic Chicken Ingredients

Here’s what each ingredient brings to the recipe:

Olive Oil – used to sear the chicken before it goes into the slow cooker. It helps the chicken develop a nicely browned surface and a little extra flavor.
Chicken Breasts – boneless, skinless chicken breasts are the star of this recipe. Cooking them low and slow in the lemon-garlic mixture keeps them tender while allowing them to soak up all that savory flavor.
Kosher Salt and Black Pepper – simple seasonings that bring out the flavor of the chicken. Season the chicken generously before searing it.
Chicken Broth – forms the savory base of the cooking liquid and gives you plenty of flavorful liquid to turn into sauce at the end.
Fresh Lemon Juice – this is where the bright, tangy flavor comes from. Freshly squeezed lemon juice balances the richness of the butter and gives the finished sauce its signature lemony taste.
Garlic – eight smashed cloves might sound like a lot, but they cook slowly with the chicken and add a rich, savory garlic flavor to the sauce.
Unsalted Butter – adds richness and helps turn the lemony cooking liquid into a smooth, velvety sauce.
All-Purpose Flour – combined with the softened butter and whisked into the cooking liquid to thicken the sauce.
Fresh Parsley – optional, but a sprinkle on top adds a little freshness and color just before serving.

Step-by-Step Instructions

First, sear the chicken.

Heat the oil in a large skillet over medium heat until shimmering. Liberally season the chicken breasts on both sides with salt and pepper. Place the chicken in the pan and sear until browned on the bottom, about 5 minutes.

That golden surface is a small step that makes a noticeable difference in the finished chicken, so give it the full time to brown.

Next, let the slow cooker take over.

Transfer the chicken seared-side up to a 6-quart or larger slow cooker in a single layer. Add the broth, lemon juice, and garlic. Cover and cook on the LOW setting until the chicken is cooked through, tender, and registers 165°F on an instant-read thermometer, 3 to 4 hours. Meanwhile, place the butter and flour in a small bowl and use your fingers to rub the flour into the butter; set aside.

At this point, the chicken has had plenty of time to cook in that lemony, garlicky broth—and you’re going to use all that flavorful liquid to make the sauce.

Finally, make the sauce.

Transfer the chicken to plates or a serving platter. Pour the liquid and garlic from the slow cooker into a small saucepan and bring to a boil over medium-high heat. Add the butter mixture and whisk constantly until completely incorporated into the sauce. Cook, stirring frequently, until the sauce is thickened, 3 to 4 minutes. Pour over the chicken, sprinkle with parsley if desired, and serve.

Don’t be shy with the sauce! Spoon it right over the chicken and whatever you’re serving alongside it.

Expert Tips

Give the chicken time to brown. When the chicken first goes into the skillet, let it sit long enough to develop that golden sear. About 5 minutes is all it needs, and it adds a lovely savory flavor to the finished dish.

Arrange the chicken in one layer. Use a 6-quart or larger slow cooker so the chicken breasts can sit in a single layer, with their seared sides facing up.

Use fresh lemon juice. Lemon is front and center in this recipe, and freshly squeezed juice gives the sauce the bright, fresh flavor you want here.

Watch the chicken toward the end. Slow cookers can vary, so start checking the chicken around the 3-hour mark. It’s ready when it’s tender, cooked through, and reaches 165°F on an instant-read thermometer.

Make sure your butter is soft. Room-temperature butter is much easier to work together with the flour. Combining them before adding them to the cooking liquid helps create that smooth, thickened sauce.

Keep whisking. Once the butter mixture goes into the saucepan, whisk constantly until it has completely disappeared into the sauce. Then let everything cook for another 3 to 4 minutes to thicken.

Recipe Variations

I’d keep the chicken itself just as written—the lemon, garlic, broth, and butter already give it everything it needs. Instead, you can make the meal feel different each time by changing what you serve alongside it.

For something cozy, spoon the chicken and plenty of sauce over creamy mashed potatoes. Rice is another easy choice, especially because it catches all those lemony juices. You could also slice the chicken and serve it over pasta, with the sauce spooned over the top.

And if you want something a little lighter, keep the chicken whole and add your favorite green vegetable or a crisp salad on the side.

Storage & Reheating

This chicken makes great leftovers, especially when you save plenty of sauce along with it.

Storage: Leftovers can be stored in an airtight container in the refrigerator for up to 4 days.

When storing the chicken, spoon some of the lemon-garlic sauce over it before closing the container. To reheat, warm the chicken gently with the sauce until heated through. Avoid cooking it longer than necessary so the chicken stays tender.

Serving Suggestions

When I make this chicken the center of dinner, I almost always want something underneath it to catch the sauce. Mashed potatoes, fluffy rice, pasta, or crusty bread are all delicious choices.

For vegetables, try it with roasted asparagus, broccoli, green beans, carrots, or Brussels sprouts. A simple green salad also works beautifully if you want something crisp and fresh alongside the warm chicken.

For an easy, comforting plate, start with a generous spoonful of mashed potatoes or rice, add the chicken, and pour that warm lemon-garlic sauce right over the top. Finish with chopped parsley if you like, and dig in while everything is hot.

Recipe FAQs

1. Can I put frozen chicken breasts directly in the slow cooker?

No, I recommend thawing the chicken breasts first. This also makes it much easier to get that nice golden sear before adding the chicken to the slow cooker. Once thawed, just follow the recipe as written.

2. Do I really need to sear the chicken first?

Yes, it’s worth the extra few minutes! Searing the chicken for about 5 minutes gives the bottom a beautiful golden color and adds more flavor. You don’t need to cook the chicken through at this point—the slow cooker will do the rest.

3. How do I know when the chicken is done?

The easiest way is to check it with an instant-read thermometer. Insert the thermometer into the thickest part of the chicken breast. Once it reaches 165°F, the chicken is cooked through and ready to come out of the slow cooker.

4. Why isn’t my lemon-garlic sauce thickening?

Make sure the sauce comes to a boil before adding the butter and flour mixture. Whisk the mixture in really well, then continue cooking for 3 to 4 minutes, stirring frequently. It may look thin at first, but it will thicken as it cooks.

5. Can I make this chicken ahead and reheat it?

Yes! Store the leftover chicken with the lemon-garlic sauce in an airtight container in the refrigerator for up to 4 days. Keeping the chicken with some of the sauce helps it stay moist. Reheat gently until the chicken is hot all the way through.

Slow-Cooker Lemon-Garlic Chicken Breast

Tender chicken breasts cook slowly with fresh lemon, garlic, and chicken broth, then the cooking liquid is transformed into a smooth, thickened sauce. Browning the chicken first adds another layer of savory flavor before everything goes into the slow cooker.

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Servings:

Ingredients

1 tbsp olive oil
4 boneless, skinless chicken breasts (about 2 pounds total)
1/2 tsp kosher salt, plus more for the chicken
1/4 tsp freshly ground black pepper, plus more for the chicken
1 cup low-sodium chicken broth
1/2 cup freshly squeezed lemon juice
8 cloves garlic, smashed
2 tbsp unsalted butter, at room temperature
2 tbsp all-purpose flour
Chopped fresh parsley leaves (optional)

Instructions

Warm the olive oil in a large skillet over medium heat until it begins to shimmer. Generously season both sides of the chicken breasts with salt and pepper. Add the chicken to the skillet and leave it undisturbed until the underside is nicely browned, about 5 minutes.
Arrange the chicken in a single layer in a 6-quart or larger slow cooker, keeping the browned sides facing upward. Pour in the chicken broth and lemon juice, then add the smashed garlic cloves. Cover and cook on LOW for 3 to 4 hours, or until the chicken is tender, fully cooked, and reaches 165°F when checked with an instant-read thermometer.
While the chicken cooks, combine the room-temperature butter and flour in a small bowl. Using your fingers, work the flour thoroughly into the butter. Set this mixture aside until needed.
Once the chicken has finished cooking, transfer the breasts to individual plates or a serving platter.
Pour the liquid and garlic from the slow cooker into a small saucepan. Set it over medium-high heat and bring the mixture to a boil. Add the prepared butter-and-flour mixture, whisking continuously until it has completely blended into the liquid.
Continue cooking the sauce for 3 to 4 minutes, stirring frequently, until it thickens. Spoon or pour the finished lemon-garlic sauce over the chicken. Garnish with chopped fresh parsley, if desired, and serve.

Notes

Nutrition

Estimated per serving based on 4 servings and the ingredient amounts in the recipe card. Actual nutrition will vary depending on the size of the chicken breasts, brands used, and how much sauce is consumed.

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