Butter chicken is one of those dishes that tastes like it took all day, but this slow cooker version does the heavy lifting while you get on with your life. Chicken thighs simmer low and slow in a tomato-butter sauce until they're fork-tender and coated in something glossy and deeply savory.
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The magic is in the sauce: crushed tomatoes cook down with butter, cream, garam masala, and a touch of sugar until the flavors meld into that familiar restaurant-style richness. Because the slow cooker traps moisture, the chicken stays juicy instead of drying out, which is the classic failure of stovetop versions.
Serve it over basmati rice or scoop it up with warm naan. It's the kind of dinner that makes a Tuesday feel like a treat, and the leftovers somehow taste even better the next day.
Why You'll Love This Recipe
About the Ingredients
2 lb (900g) boneless, skinless chicken thighs, cut into 2-inch pieces
Thighs stay juicier than breasts in a slow cooker; if you only have breasts, use them but reduce the cook time to 3 hours on low. Look for thighs with even thickness so they cook at the same rate.
1 medium yellow onion, finely diced (about 1 cup/160g)
Yellow onion gives the sweetest base; a red onion works but turns the sauce slightly pink. Frozen diced onion is a fine shortcut if you're short on time.
3 garlic cloves, minced (about 1 tbsp)
Fresh garlic is best, but 1 teaspoon of garlic paste can stand in. Avoid garlic powder here since fresh garlic mellows into sweetness during the long cook.
1 tbsp freshly grated ginger
Grate ginger on a microplane so it melts into the sauce; jarred ginger paste is a good substitute at a 1:1 ratio. Frozen ginger grates easily without peeling.
1 can (28 oz/794g) crushed tomatoes
Crushed tomatoes give body; if you only have diced, pulse them briefly in a blender. San Marzano-style tomatoes are sweeter and less acidic.
4 tbsp (56g) unsalted butter, cut into pieces
Add half at the start and half at the end for the freshest butter flavor. Salted butter works, but then reduce the added salt to a pinch.
1 cup (240ml) heavy cream
Stir in at the end so it doesn't separate during the long cook; half-and-half can substitute but the sauce will be thinner. For dairy-free, use full-fat coconut cream.
2 tsp garam masala
A good garam masala is the backbone of the flavor; if yours is old, buy fresh since spices lose potency after a year. Curry powder is a workable but different-tasting substitute.
1 tsp ground cumin
Toasting whole cumin seeds and grinding them yourself gives a brighter flavor. Ground coriander (1 tsp) can round it out if you have it.
1 tsp kosher salt, plus more to taste
Kosher salt dissolves evenly; if using table salt, start with 3/4 teaspoon. Taste the sauce at the end since tomato brands vary in sodium.
1 tbsp tomato paste
Tomato paste deepens the color and adds umami; sun-dried tomato paste is a richer swap. Freeze leftover paste in tablespoon portions.
1 tsp granulated sugar
Sugar balances the acidity of the tomatoes; honey works too. Skip it only if your tomatoes are naturally very sweet.
Tips & Tricks
Don't add the cream at the start
dairy can curdle or separate over hours of heat, so stir it in during the last 15 minutes for a silky sauce.
Brown the chicken first if you can
a quick sear in a hot skillet (medium-high, about 400F/205C pan surface, 3 minutes per side) adds deep flavor, though it's optional.
Keep the lid closed
every peek releases heat and adds 15-20 minutes to the cook time, so resist until the minimum time is up.
Season at the end
taste after adding cream and adjust salt, since slow cooking concentrates the tomato flavor and saltiness.
Pro Tips
Step-by-Step Instructions
1. Prep the chicken
Pat the chicken thighs dry with paper towels and cut into 2-inch pieces. Drying helps the seasoning adhere and prevents a watery sauce.
2. Layer the slow cooker
Add the onion, garlic, ginger, crushed tomatoes, tomato paste, garam masala, cumin, sugar, and 1 teaspoon salt to a 6-quart slow cooker. Stir well, then nestle the chicken into the sauce and dot with half the butter (2 tbsp).
3. Slow cook on low
Cover and cook on low for 5 to 6 hours or on high for 3 to 3.5 hours, until the chicken shreds easily with a fork and reaches an internal temperature of 165F (74C).
4. Optional sear for depth
If you want extra flavor, heat 1 tablespoon of the butter in a skillet over medium-high heat (about 375F/190C) and sear the chicken pieces for 3 minutes per side until golden brown before adding to the slow cooker. This step is optional but adds a richer taste.
5. Finish with cream and butter
Turn the slow cooker to high, stir in the heavy cream and remaining 2 tablespoons butter, and cook uncovered for 15 minutes until the sauce is bubbling at the edges and slightly thickened.
6. Taste and adjust
Taste the sauce and add salt or a pinch of sugar as needed. If it's too thick, loosen with 2 to 4 tablespoons of warm water.
7. Serve
Spoon over basmati rice or with warm naan, and garnish with fresh cilantro if you like.
Delicious Variations
Coconut butter chicken
swap the heavy cream for full-fat coconut cream and the butter for coconut oil for a dairy-free version.
Spicy butter chicken
add 1/2 teaspoon of cayenne or 1 minced serrano pepper with the spices for a gentle kick.
Butter chicken with vegetables
stir in 2 cups of cauliflower florets or cubed sweet potato during the last hour of cooking for a one-pot meal.
How to Store Slow Cooker Butter Chicken with Rich Tomato Cream Sauce
Refrigerator
Store in an airtight container in the refrigerator for up to 4 days; the flavors deepen overnight.
Freezer
Freeze in portions for up to 3 months; leave 1 inch of headspace in the container since the sauce expands.
Reheating
Reheat gently on the stovetop over medium-low heat (about 300F/150C) or in the microwave, stirring in a splash of cream or water to loosen the sauce.
Frequently Asked Questions
Q: Can I use chicken breasts instead of thighs?
Yes, but reduce the cook time to about 3 hours on low or 2 hours on high, since breasts dry out faster. Check for an internal temperature of 165F (74C) and stop cooking as soon as they reach it.
Q: Why did my butter chicken sauce curdle?
The cream was likely added too early or the heat was too high. Stir the cream in during the last 15 minutes on high heat and avoid boiling once it's added.
Q: Can I make this butter chicken ahead of time?
Yes, it tastes even better made a day ahead. Cool it completely, refrigerate, and reheat gently with a splash of cream or water to bring the sauce back to the right consistency.
Q: Is butter chicken the same as tikka masala?
They are similar but not identical: butter chicken is milder, creamier, and butter-rich, while tikka masala is usually tangier and more heavily spiced. Both use tomato and cream, but the seasoning balance differs.
Q: How do I thicken butter chicken sauce?
Simmer it uncovered on high for 15 to 20 minutes, or stir in a cornstarch slurry made from 1 tablespoon cornstarch and 2 tablespoons water. Add the slurry a little at a time until the sauce coats the back of a spoon.
Give this slow cooker butter chicken a try this week and let the aroma fill your kitchen. If you make it, leave a comment below and tell me how you served it, and don't forget to share it with a friend who needs an easy dinner win.
Slow Cooker Butter Chicken with Rich Tomato Cream Sauce
Slow Cooker Butter Chicken delivers tender chicken in a rich tomato cream sauce with almost no hands-on work, perfect for busy weeknights.
🧂 Ingredients
- 2 lb (900g) boneless, skinless chicken thighs, cut into 2-inch pieces
- 1 medium yellow onion, finely diced (about 1 cup/160g)
- 3 garlic cloves, minced (about 1 tbsp)
- 1 tbsp freshly grated ginger
- 1 can (28 oz/794g) crushed tomatoes
- 4 tbsp (56g) unsalted butter, cut into pieces
- 1 cup (240ml) heavy cream
- 2 tsp garam masala
- 1 tsp ground cumin
- 1 tsp kosher salt, plus more to taste
- 1 tbsp tomato paste
- 1 tsp granulated sugar
📋 Instructions
- 1Prep the chicken — Pat the chicken thighs dry with paper towels and cut into 2-inch pieces. Drying helps the seasoning adhere and prevents a watery sauce.
- 2Layer the slow cooker — Add the onion, garlic, ginger, crushed tomatoes, tomato paste, garam masala, cumin, sugar, and 1 teaspoon salt to a 6-quart slow cooker. Stir well, then nestle the chicken into the sauce and dot with half the butter (2 tbsp).
- 3Slow cook on low — Cover and cook on low for 5 to 6 hours or on high for 3 to 3.5 hours, until the chicken shreds easily with a fork and reaches an internal temperature of 165F (74C).
- 4Optional sear for depth — If you want extra flavor, heat 1 tablespoon of the butter in a skillet over medium-high heat (about 375F/190C) and sear the chicken pieces for 3 minutes per side until golden brown before adding to the slow cooker. This step is optional but adds a richer taste.
- 5Finish with cream and butter — Turn the slow cooker to high, stir in the heavy cream and remaining 2 tablespoons butter, and cook uncovered for 15 minutes until the sauce is bubbling at the edges and slightly thickened.
- 6Taste and adjust — Taste the sauce and add salt or a pinch of sugar as needed. If it's too thick, loosen with 2 to 4 tablespoons of warm water.
- 7Serve — Spoon over basmati rice or with warm naan, and garnish with fresh cilantro if you like.
