The problem with most keto beef stew recipes is they lean on turnips or cauliflower, both of which either going soggy or taste like damp dirt. Radishes are the fix: halved and slow-cooked, they soften to a potato-like tenderness without blowing the carb count.
This keto beef stew builds real depth through browning and deglazing, then thickens with glucomannan so the broth stays glossy, not pasty. It’s a hearty bowl that works because each swap is deliberate, not a compromise.
I once threw in whole radishes thinking they’d cook down like potatoes, but they stayed crunchy and tasted like spicy turnips. I had to pick them out one by one.
Radishes mimic potato texture without the carbs
Radishes absorb the broth and soften during long cooking, turning tender and mild. They lose their raw bite and take on a potato-like texture.
Halving them ensures the centers cook through at the same rate as the rest. The result is a stew that satisfies that craving for chunks of soft vegetable, without the carb load of potatoes.
The radishes themselves are neutral, so they pick up the beef and herb flavors around them. You won’t taste radish, just a tender, savory bite that fits the keto profile.
Browning beef and deglazing creates deep flavor
Browning the beef develops fond, the browned bits stuck to the pan that pack concentrated meaty flavor. Deglazing with broth and soy sauce lifts those bits into the liquid, so nothing is lost.
In a slow cooker, where there’s no evaporation to concentrate flavors, this step is essential. Without it, the stew would taste flat, lacking the richness that comes from caramelization.
The soy sauce adds umami without extra saltiness. The result is a broth that tastes like it simmered longer than it did.
Glucomannan thickens without starch or carbs
Glucomannan is a soluble fiber that swells in liquid, creating a silky thickness with zero net carbs. Unlike flour or cornstarch, it doesn’t need heat to activate, and it won’t make the stew cloudy.
The trick is to mix it with cold water first, otherwise, you get clumps that never dissolve. Adding it in thirds, with a minute between each addition, lets you control the final consistency.
You can stop when the broth coats the back of a spoon. The stew stays glossy, not pasty, and the flavor remains clean.
Prep: 30 min · Cook: 6 hr · Total: 6 hr 30 min · Servings: 6 · Calories: 360 kcal
Ingredients that need a closer look for keto stew
Radishes: Halve them so they soften fully; whole radishes stay firm in the center.
Beef stew meat: Buy chuck or another well-marbled cut; lean meat turns dry during long cooking.
Glucomannan: Must be mixed with cold water first, or it clumps and never dissolves.
Mushrooms: Clean them with a brush or damp towel; rinsing makes them waterlogged and bland.
Frozen peas: Add straight from the freezer; no need to thaw, they warm through in minutes.
Build depth in a slow cooker without evaporation
Brown the beef in batches
Sear the meat until a deep brown crust forms, not just gray, that crust is flavor. If the pan gets crowded, the meat steams instead; work in batches if needed.
Deglaze with broth and soy sauce
Pour in 1/2 cup broth with the tomato paste and soy sauce, scraping up every browned bit. If the bits don’t release easily, the pan is too cool, heat it back up.
Layer radishes and vegetables
Add radishes, carrots, celery, and mushrooms to the slow cooker. The radishes should be halved so they soften evenly; whole ones stay firm in the center.
Cook low and slow
Set to LOW for 6 to 8 hours, but don’t peek unless using the oven method. Lifting the lid releases heat and extends cooking time. The stew is done when beef pulls apart with a fork.
Stir in peas and thicken
Add frozen peas and cook uncovered 15 minutes. Mix glucomannan with cold water, then stir in one-third at a time, wait a minute between additions. Stop when the broth coats the back of a spoon.
Keto Beef Stew
Ingredients
- 2 tablespoons oil
- 2.5 pounds beef stew meat cut into chunks
- 1 teaspoon salt or less, depending on broth type
- black pepper to taste
- 1 small yellow onion diced, about 1/3 cup
- 2 cloves garlic sliced
- 2 teaspoons Italian seasoning
- 2 tablespoons tomato paste
- 2 1/2 cups beef broth
- 1 tablespoon soy sauce or liquid aminos to taste
- 1 pound radishes halved
- 2 large carrots peeled, trimmed, sliced thickly
- 5 large celery stalks trimmed, thickly sliced
- 1 (8 oz) package mushrooms cleaned and sliced
- 3 tablespoons frozen peas no need to thaw
- 2 teaspoons glucomannan
Instructions
Preheat Oven:
If using an oven, preheat to 350°F (175°C).Brown Beef Chunks:
Heat oil in a large skillet over medium-high heat (or in a large oven-safe pot like a Dutch oven). Brown beef chunks on all sides for a few minutes, seasoning with salt and pepper. Transfer to a 5-6 quart slow cooker (or set aside on a plate).Sauté Aromatics:
Add onion and garlic to the pan; cook for 2 minutes. Stir in Italian seasoning and tomato paste, then add 1/2 cup beef broth and soy sauce. Deglaze the pan by scraping up browned bits, then pour mixture into the slow cooker (or return meat to the Dutch oven).Add Vegetables and Broth:
Add all vegetables except peas, then pour the remaining 2 cups of broth over the top.Slow Cook Stew:
Cook on LOW for 6-8 hours or on HIGH for 3-4 hours. (For oven method: cook for 2 hours, stirring carefully every 30 minutes; reduce heat to 320°F (160°C) if top ingredients brown too quickly. Do not stir if using a slow cooker.)Add Peas:
Remove lid, stir, and add peas. Cook uncovered for 15 more minutes (or 5 minutes on stovetop).Thicken with Glucomannan:
To thicken, mix glucomannan with a few tablespoons of cold water in a small bowl. Add one-third of the mixture to the stew, stirring well. Wait 1-3 minutes for thickening to occur. Repeat as needed until desired consistency is reached. Serve immediately.
Storage and Serving
This stew thickens as it cools, so don’t worry if it looks loose when you turn off the heat. Let it cool to room temperature, then transfer to an airtight container. Refrigerate for up to 5 days.
The radishes will soften further upon reheating, but they still hold their shape. Reheat gently on the stovetop or in the microwave, adding a splash of broth if needed to loosen the gravy.
For longer storage, freeze for up to 3 months. Thaw overnight in the fridge and reheat slowly. The peas will lose their bright color, but the flavor remains.
Serve as soon as it’s hot; the texture is best within the first 3 days. The glucomannan thickener holds up well to reheating, so the stew won’t thin out.
Tips
- If your slow cooker runs hot, cut radishes into quarters instead of halves to ensure they soften fully in 6 hours on LOW.
- Add radishes in a single layer on top of the other vegetables so they are submerged in broth and cook evenly.
Swap these three, leave the others alone
Soy sauce: Coconut aminos or tamari (gluten-free tamari if avoiding gluten). Use the same amount. Coconut aminos are slightly sweeter and less salty, so you might need a pinch more salt.
Tamari is a direct swap with nearly identical flavor.
Glucomannan: Xanthan gum (for keto) or cornstarch slurry (for non-keto). Use 1 teaspoon xanthan gum whisked into the hot liquid (or mixed with fat first), glucomannan needs cold water, xanthan doesn’t clump as easily. For cornstarch, mix 2 tablespoons with 3 tablespoons cold water, stir in, and simmer 1 minute.
Glucomannan gives a silkier, more transparent gel; xanthan is slightly more viscous; cornstarch turns cloudy and adds a few carbs per serving.
Radishes: Turnips or jicama (both low-carb). Peel turnips and cut into 1-inch chunks, they soften similarly but have a slight peppery bite that mellows with cooking. Jicama stays crunchier; dice it smaller (½ inch) and expect a firmer texture even after long cooking.
Neither will taste like potato, but both absorb broth well. Don’t swap with potatoes or parsnips, they blow the carb count.
Frequently Asked Questions
Can I make this stew ahead of time and reheat it?
Yes, you can, the stew actually thickens as it cools, so it’s a good candidate for make-ahead. Refrigerate in an airtight container for up to 5 days; reheat gently on the stovetop or microwave, adding a splash of broth if the gravy’s too thick. The radishes soften further but still hold shape, and the glucomannan keeps the stew from thinning out.
Why are my radishes still crunchy after cooking?
Most likely they weren’t halved. Whole radises stay firm in the center even after 6 hours on LOW. If you did halve them, check that your slow cooker runs hot enough, if it runs cool, the radishes may not soften fully.
The recipe aims for a potato-like tenderness, so halving is key.
How is this keto stew different from a traditional beef stew?
The biggest swap is radishes for potatoes, they absorb broth and turn tender without the carbs. It’s thickened with glucomannan instead of flour or cornstarch, so the gravy stays clear and silky, not cloudy. The peas are a small exception (a few carbs per serving), but the overall carb count stays around 360 calories and low net carbs.
