Recipe

Slow Cooker Oxtail

Fork-tender oxtail with a deep, savory gravy made right in the slow cooker (with one quick browning step for maximum flavor).

By Matt Campbell

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4.8

A shallow bowl of slow cooker oxtail with glossy brown gravy, carrots, and herbs, served on a rustic table with a spoon and linen napkin

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Oxtail in the slow cooker is one of those unfair kitchen wins. You do a little early work, then hours later you get meat that pulls off the bone like it has somewhere better to be, plus a gravy that tastes like you paid someone in a chef coat to babysit it all day.

This recipe leans classic: tomato paste, red wine, aromatic veggies, and thyme, then a slow cook that turns collagen into that silky, lip-sticking richness. Serve it over mashed potatoes, rice, polenta, or even buttered noodles, then pretend you meant to make a whole Sunday dinner on a Tuesday.

Raw oxtail pieces, onions, carrots, celery, garlic, tomato paste, red wine, beef broth, thyme, and bay leaves laid out on a clean kitchen counter with small bowls of salt and pepper

Why It Works

Deep flavor without drama: A quick sear plus tomato paste and wine makes the slow cooker taste way more grown up.
Fall-apart texture: Oxtail is packed with connective tissue, so low heat turns it into tender meat and silky broth.
Built-in gravy: An optional cornstarch slurry at the end gives you a glossy sauce that clings to potatoes like it is holding on for dear life.
Flexible serving: Works with cozy carbs, roasted veggies, or a simple salad if you want balance.

Pairs Well With

Storage Tips

Refrigerate: Cool leftovers, then store in an airtight container for up to 4 days (or follow your local food-safety guidance). The gravy will thicken as it chills, which is a good problem.

Freeze: Freeze oxtail and gravy in freezer containers for up to 3 months for best quality. Thaw overnight in the fridge.

Reheat: Warm gently in a saucepan over medium-low with a splash of broth or water to loosen the sauce. Reheat until steaming hot and heated through. Microwave works too, just do it in short bursts and stir so the gravy stays smooth.

Bonus move: If you have time, chill overnight and skim the solidified fat off the top. The flavor stays, the sauce feels lighter.

Common Questions

Do I need to brown oxtail first?

You do not have to, but I really recommend it. Browning builds that roasted, beefy base that a slow cooker cannot create on its own. If you are skipping it, add an extra tablespoon of tomato paste and 1 teaspoon soy sauce (optional) to help boost depth.

Can I cook oxtail on high?

You can, but low is better. On LOW, plan for about 8 to 10 hours and start checking around hour 8. On HIGH, about 5 to 6 hours can work, but the texture is usually less silky. Oxtail is happiest when it takes its time.

How do I know it is done?

The meat should be very tender and pull away from the bone with a fork. If it still feels tight or chewy, keep cooking. Oxtail has a stubborn phase, then suddenly it is perfect.

What if my sauce is greasy?

Skim fat off the top with a spoon, or chill the insert and remove the solid fat. Also, do not drown the pot with extra liquid. Add enough so it comes about halfway to two-thirds up the oxtail once everything is in. Oxtail releases plenty as it cooks, but you still want enough in there so nothing scorches around the edges.

What can I use instead of red wine?

Swap in more beef broth plus 1 tablespoon balsamic vinegar (or 2 teaspoons red wine vinegar) for that same little pop of acidity.

Can I add potatoes to the slow cooker?

Yes. Add baby potatoes in the last 3 to 4 hours on LOW so they do not turn to mush. I still prefer serving over mashed potatoes made separately, because gravy deserves a smooth landing pad.

Oxtail pieces searing in a hot cast iron skillet with browned edges, with tongs resting on the pan handle and steam rising

Matt Campbell

I have always had a huge passion for the culinary arts, people, working as a team, and so on. I wanted to pursue my love for cooking initially at Virginia Commonwealth University with a culinary arts degree; however, I instead decided to apply myself and acquire more practical skills. My end goal is to eventually open my own restaurant or similar establishment.

Kitchen Essentials

6 to 7 quart slow cooker
Large heavy skillet or Dutch oven (for browning)
Tongs
Cutting board and chef’s knife
Measuring cups and spoons
Small bowl (for cornstarch slurry)
Fine mesh strainer (optional, for a smoother gravy)

I love cooking big, ambitious stuff, but I also love cooking like a person with a life. Oxtail in the slow cooker is my favorite compromise. The first time I made it, I was chasing that restaurant-style, glossy sauce at home without turning my kitchen into a full-time job. I browned the oxtail, tossed everything in, walked away, and came back to the kind of smell that makes you check the calendar for a holiday you forgot.

Now it is my go-to when I want something that feels like a flex, even though the slow cooker did most of the heavy lifting. I just show up at the end and stir in a slurry like I have been working all day.