Fresh spinach is one of the most versatile leafy greens you can keep in your kitchen. It is packed with iron, vitamins A and C, and folate. While many people reach for a dedicated metal steamer basket to prepare this vegetable, you might find yourself in a situation where that specific gadget is missing from your cupboard. Learning how to steam spinach without a steamer is a fundamental kitchen skill that ensures you never have to skip your greens just because you lack a specialized tool.
Steaming is arguably the best way to prepare spinach because it preserves the vibrant green color and maintains the structural integrity of the leaves better than boiling, which can lead to a soggy, waterlogged mess. When you steam, you use the power of water vapor to gently wilt the leaves, locking in nutrients that might otherwise leach out into boiling water.
Why Steaming Spinach is Superior to Boiling
Before diving into the “how-to,” it is worth understanding the “why.” Spinach is high in oxalic acid, which can sometimes give the teeth a “chalky” feeling. Lightly cooking the spinach helps reduce this effect. However, overcooking is the enemy of the flavor profile.
When you boil spinach, the leaves are submerged in water. This often results in the loss of B vitamins and Vitamin C, which are water-soluble. Steaming allows the spinach to sit above or just barely in contact with a small amount of moisture, using a temperature of 212°F (the boiling point of water) to transform the leaves in seconds.
The Skillet or Sauté Pan Method
This is perhaps the easiest way to steam spinach without any extra equipment. Most households have a wide skillet with a lid. This method uses the water clinging to the leaves after washing to create the necessary steam.
Preparing the Spinach
Start by thoroughly washing your spinach in cold water. Do not spin it dry in a salad spinner. You actually want those droplets of water clinging to the leaves; they act as your steaming liquid. If you are using pre-washed bagged spinach, you may need to add one or two tablespoons of water to the pan.
The Cooking Process
Place your skillet over medium-high heat. Pile the damp spinach into the pan. It will look like a mountain at first, but remember that spinach reduces significantly in volume—usually by about 90 percent. Place a tight-fitting lid over the skillet. The heat will turn the moisture on the leaves into steam, which is trapped by the lid.
Check the pan after about 60 to 90 seconds. Use tongs to toss the leaves so the bottom ones don’t overcook while the top ones stay raw. Once the leaves are wilted and bright green, remove them from the heat immediately.
The Microwave Method for Busy Cooks
If you are short on time, the microwave is an incredibly effective “steamer.” It works by vibrating water molecules, creating internal steam within the vegetable itself.
Using a Microwave-Safe Bowl
Place your washed spinach in a large glass or ceramic bowl. Again, leave a little moisture on the leaves. Cover the bowl tightly with a microwave-safe plate or a damp paper towel. Avoid using plastic wrap if possible, as the steam can become very hot and cause the plastic to melt or leach.
Timing and Temperature
Microwave on high for 1 to 2 minutes, depending on the volume of spinach. Because microwaves vary in power, it is best to start with 1 minute, check the progress, and add 30-second increments. The steam trapped under the plate will wilt the spinach perfectly. Be careful when removing the cover, as the escaping steam will be well over 200°F and can cause burns.
The Colander and Pot Hack
If you want a method that mimics a traditional steamer basket more closely, you can use a heat-proof colander and a standard cooking pot. This is excellent for larger batches of spinach.
Setting Up the Rig
Find a pot that is large enough for your metal or heat-safe silicone colander to sit inside or on top of. Fill the pot with about an inch of water, ensuring that the water level is below the bottom of the colander. You do not want the spinach sitting in the water; you want it sitting in the path of the steam.
Steaming the Greens
Bring the water to a boil over high heat. Once you see active steam rising, place the colander filled with spinach over the pot. Cover the colander with a large pot lid or even a piece of aluminum foil to trap the heat. This method takes about 2 to 3 minutes. Since the spinach is elevated, it cooks very evenly.
The Sieve or Strainer Alternative
Similar to the colander method, a fine-mesh metal sieve can work wonders. This is particularly useful if you are only steaming a small handful of spinach for a single serving or a baby food puree.
Rest the sieve over a small saucepan of simmering water. Because the mesh is fine, the steam distributes very quickly through the leaves. Keep a close eye on this, as small amounts of spinach can turn from “perfectly wilted” to “mushy” in a matter of seconds.
Tips for Flavoring Steamed Spinach
Steamed spinach on its own is quite mild. Once you have mastered the steaming process without a traditional steamer, you can elevate the dish with simple additions.
A classic approach is to toss the hot, steamed leaves with a squeeze of fresh lemon juice, a drizzle of extra virgin olive oil, and a pinch of sea salt. The acidity of the lemon cuts through the earthy notes of the spinach. Alternatively, you can toss in some minced garlic that has been lightly sautéed in butter for a richer side dish.
Common Mistakes to Avoid
One of the most frequent errors is leaving the spinach in the hot pan or bowl after it has finished cooking. Spinach has very little “thermal mass,” meaning it cools down quickly but also continues to cook from residual heat. To stop the cooking process and keep that “photo-ready” green color, move the spinach to a colander and rinse briefly with cold water if you aren’t serving it immediately.
Another mistake is adding too much water. If you submerge the spinach, you are boiling it, not steaming it. You only need enough moisture to create a thin veil of vapor inside your vessel.
How to Handle Frozen Spinach
If you are using frozen spinach, you can still “steam” it without a steamer, but the process is slightly different. Frozen spinach has already been blanched (briefly cooked), so you are essentially just reheating and removing excess moisture.
For frozen spinach, the skillet method works best. Place the frozen block in the skillet with a lid over medium heat. The ice crystals on the spinach will melt and turn into steam. Once the block has broken apart, remove the lid to allow the excess moisture to evaporate so the spinach isn’t swimming in liquid.
Storage and Reheating
Steamed spinach stays fresh in the refrigerator for about 3 to 4 days. Store it in an airtight container. When reheating, it is best to use the microwave for 30 seconds or a quick toss in a warm pan. Avoid reheating it multiple times, as the texture will degrade and it may lose its nutritional value.
FAQs
- Can I steam spinach in an oven?
- While possible, it is not recommended. The oven takes much longer to reach the necessary temperatures to create steam, and you risk drying out the edges of the leaves before the centers wilt. Stick to the stovetop or microwave for the best results.
- Do I need to remove the stems before steaming?
- This is a matter of personal preference. For baby spinach, the stems are usually tender and can be left intact. For mature, large-leaf spinach, the stems can be woody and fibrous. If the stems are thicker than a matchstick, it is usually best to trim them off.
- Is steamed spinach healthier than raw spinach?
- Interestingly, cooking spinach can make certain nutrients more bioavailable. While heat destroys some Vitamin C, it breaks down the oxalic acid that inhibits the absorption of calcium and iron. Steaming offers a great nutritional balance.
- Why did my steamed spinach turn brown?
- Spinach turns brown or olive-drab if it is overcooked or if it is exposed to an acidic environment for too long while cooking. To keep it green, steam it quickly (under 3 minutes) and add lemon juice or vinegar only right before serving.
- Can I use a bamboo steamer for spinach?
- Yes, if you happen to have a bamboo steamer but not a metal one, it works perfectly. Simply line the bamboo slats with a piece of parchment paper or a few large spinach leaves to prevent the smaller leaves from falling through the gaps, then set it over a wok of simmering water.