Steaming is the healthiest way to cook beets for most people. It preserves the most vitamins, keeps the pigment compounds that give beets their health benefits largely intact, and avoids the nutrient leaching that happens when beets sit in boiling water. That said, the best method for you depends on what you’re optimizing for, because boiling actually has a real advantage for people watching their oxalate intake.
Why Steaming Comes Out on Top
The main reason steaming wins is simple: beets never sit in water, so water-soluble nutrients stay in the vegetable instead of draining into a pot you’ll pour down the sink. A 2013 study comparing the two methods found that steaming vegetables for five minutes caused only 8 to 14% vitamin C loss, while boiling for the same amount of time destroyed 40 to 54% of vitamin C. Beets are a good source of folate too, another water-soluble vitamin that leaches out during boiling.
Steaming also keeps cook times relatively short, which matters because the pigments responsible for many of beets’ antioxidant properties (called betalains) start breaking down at temperatures as low as 60°C (140°F). The longer beets are exposed to heat, the more of these compounds degrade. Steaming cooks beets through without submerging them, so you lose less to both heat and water contact.
How Roasting and Baking Compare
Roasting beets at around 200°C (about 400°F) is the most popular cooking method for flavor, and the nutritional news is better than you might expect. A study from Semina: Ciências Agrárias that tested steaming, boiling, pressure cooking, and oven baking found no statistically significant difference in phenolic compound levels or antioxidant activity between raw beets and any of the cooked versions. Oven-baked beets retained their phenolic content at about 65 mg per 100 grams, essentially matching the raw values.
The catch with roasting is time. Beets are dense, and roasting a whole beet at 400°F typically takes 45 minutes to over an hour. That prolonged heat exposure degrades betalains more than a 20-minute steam would. You’re also dealing with higher surface temperatures, which can break down heat-sensitive vitamins faster. If you roast, wrapping beets in foil helps them cook more evenly and reduces the total time in the oven.
When Boiling Is Actually the Better Choice
If you’re prone to kidney stones, boiling beets is worth the tradeoff in lost vitamins. About 75% of kidney stones are made primarily of calcium oxalate, and beets are a moderate source of oxalates. Research published in the Journal of Agricultural and Food Chemistry found that boiling reduced the soluble oxalate content of beet roots by roughly 30%, dropping it from about 49 mg per 100 grams raw to 34 mg per 100 grams boiled. Steaming, by contrast, barely moved the needle, reducing soluble oxalate by only about 6%.
Soluble oxalate is the form your body absorbs most readily, so this distinction matters. Baking showed no oxalate reduction at all in the vegetables tested. For people managing oxalate intake, boiling is the clear winner despite the vitamin losses.
Microwaving Is Faster and Surprisingly Effective
Microwaving beets is an underrated option. Because microwave cooking is fast and uses little or no added water, it minimizes both heat exposure time and nutrient leaching. Research on microwave-treated beets found that the method preserved betalain pigments well compared to conventional heating. One study showed that a short microwave treatment preserved significantly more of these bioactive compounds than longer convection-based methods.
To microwave beets, pierce them with a fork, wrap in a damp paper towel, and cook on high for 8 to 15 minutes depending on size. The result won’t have the caramelized sweetness of roasting, but it’s a solid weeknight shortcut that keeps most of the nutrition intact.
Preparation Tips That Make a Difference
However you cook your beets, leave the skin on during cooking. According to the University of Illinois Extension, breaks and tears in the skin allow both color and nutritional value to escape. The skin acts as a barrier that holds betalains and water-soluble vitamins inside the beet while it cooks. Peel after cooking, once the beets have cooled enough to handle. The skin slips off easily at that point.
Leave about an inch of the stem attached and don’t trim the root end. Both of these steps prevent “bleeding,” which is really just nutrients and pigments leaking out through open wounds in the vegetable. Cutting beets into smaller pieces before cooking speeds up cook time but dramatically increases the surface area exposed to heat and water, so whole beets always retain more nutrition than cubed ones.
Eating Beets Raw
Raw beets preserve every heat-sensitive nutrient, including the full complement of betalains and vitamin C. Grating raw beets into salads or blending them into smoothies sidesteps the cooking question entirely. The tradeoff is digestibility: raw beets are tough and fibrous, and some people find them harder on the stomach. Cooking softens the cell walls, which can actually make certain nutrients easier to absorb even as others are lost.
If you eat beets raw, grating or spiralizing them increases the surface area, making them easier to chew and digest. A simple dressing with acid (lemon juice or vinegar) helps brighten the flavor and may slow oxidation of the pigments on the plate.
Quick Comparison by Method
- Steaming: Best overall nutrient retention. Low vitamin C loss, minimal betalain degradation, no water leaching. Takes 20 to 30 minutes for whole beets.
- Roasting (400°F): Best flavor. Phenolic compounds and antioxidant activity hold up well, but prolonged heat degrades betalains more than steaming. Takes 45 to 60 minutes.
- Boiling: Best for reducing oxalates (30% reduction in soluble oxalate). Worst for water-soluble vitamins, with up to 54% vitamin C loss. Takes 30 to 45 minutes.
- Microwaving: Fastest method with good nutrient preservation. Minimal water contact and short cook time protect betalains. Takes 8 to 15 minutes.
- Raw: Maximum nutrient content but harder to digest. Works best grated or blended.