You know those nights when you need something healthy, quick, and comforting? That’s exactly why I make this zucchini onion boil at least twice a week! It’s my go-to side dish when I’m craving something light but satisfying, just zucchini and onions simmered to tender perfection in a simple broth. The best part? It’s ready in under 30 minutes and works beautifully whether you’re watching calories or following keto (just skip the water and sauté longer). I’ve been making this for years, it’s one of those foolproof recipes that never lets me down. The zucchini stays crisp-tender, the onions turn sweet and mellow, and together they create this deliciously simple flavor that pairs with almost anything. Trust me, once you try this zucchini onion boil, you’ll understand why it’s become my kitchen staple!
Why You’ll Love This Zucchini Onion Boil
This dish has become my weeknight superhero for so many reasons:
- Done in 25 minutes flat, From chopping to serving, it’s faster than ordering takeout
- Crazy low at just 80 calories per generous serving, Eat guilt-free seconds!
- Keto magic, Skip the water, sauté longer, and boom, perfect keto veggie side
- Endlessly adaptable, Throw in garlic, herbs, or turkey bacon when you want to mix it up
Seriously, this recipe is the definition of easy healthy eating done right.
Zucchini Onion Boil
Ingredients
Equipment
Method
- Heat olive oil in a large pot over medium heat.
- Add sliced onions and sauté until translucent, about 3 minutes.
- Add zucchini, salt, and black pepper. Stir to combine.
- Pour in water and bring to a boil. Reduce heat and simmer for 10 minutes, or until zucchini is tender.
- Serve warm as a side dish.
Notes
Ingredients for Zucchini Onion Boil
Here’s everything you’ll need to make this simple yet flavorful dish, I promise it’s probably already in your kitchen!
- 2 medium zucchini, sliced into 1/4-inch rounds (don’t peel them, the skin adds nice texture!)
- 1 large onion, thinly sliced (I prefer yellow for sweetness, but white works too)
- 2 tbsp olive oil, our cooking base and flavor booster
- 1 tsp salt, start with this, then adjust to taste
- 1/2 tsp black pepper, freshly cracked if you’ve got it
- 1 cup water, just enough to create steam (omit for keto version)
That’s it! Six simple ingredients that transform into something magical together.
Equipment You’ll Need
One of my favorite things about this zucchini onion boil? You don’t need any fancy gadgets! Just grab:
- A large pot, Big enough to hold all those zucchini slices comfortably
- A sharp knife, Makes quick work of slicing
- A cutting board, For safe, easy prep
See? Told you it was simple, now let’s get cooking!
How to Make Zucchini Onion Boil
Okay, let’s dive into making this simple yet delicious dish! I’ve made this zucchini onion boil so many times I could probably do it with my eyes closed (but don’t worry, I’ll keep them open for safety!). Follow these easy steps and you’ll have perfect results every time.
Step 1: Sauté the Onions
First things first, grab that large pot and heat your olive oil over medium heat. You’ll know it’s ready when the oil shimmers slightly. Now toss in those thinly sliced onions! I love this part, the sizzle when they hit the pan is music to my ears. Cook them for about 3 minutes, stirring occasionally, until they turn beautifully translucent. Don’t rush this step, those softened onions are the flavor foundation of our dish!
Step 2: Add Zucchini and Seasonings
Now for the star of the show, those gorgeous zucchini slices! Dump them right into the pot with the onions. Sprinkle in the salt and pepper, then give everything a good stir. I like to use a wooden spoon here to gently coat all the zucchini slices with the seasonings and oniony goodness. The zucchini will start absorbing those flavors immediately, you can practically smell the deliciousness building!
Step 3: Boil and Simmer
Time for the magic moment, pour in that cup of water (remember, skip this for keto!) and crank the heat up to bring it to a boil. Once you see bubbles, immediately reduce the heat to a gentle simmer. Now set your timer for 10 minutes, this is when the zucchini transforms into tender perfection. You’ll know it’s done when the zucchini pieces are soft but still hold their shape, no mushy veggies here! Give it a quick taste test and adjust seasoning if needed before serving.
See? I told you it was simple! Now let’s talk about how to make this dish even better with some pro tips…
Tips for Perfect Zucchini Onion Boil
After making this dish countless times, I’ve picked up some tricks that take it from good to amazing:
- Watch the clock! Zucchini turns mushy fast, pull it off the heat when it’s just tender (about 10 minutes max)
- Salt to taste, Start with 1 tsp, then add more at the end if needed
- Fresh herbs rock, A sprinkle of thyme or rosemary adds wonderful depth
- Slice evenly, Uniform zucchini pieces cook at the same rate
Trust me, these small touches make a huge difference in your final dish!
Variations of Zucchini Onion Boil
One of my favorite things about this recipe is how easily you can switch it up! For a keto version, simply skip the water and sauté everything in olive oil until tender, it’s that easy. When I’m feeling fancy, I’ll toss in minced garlic with the onions for extra flavor. And on Sundays? A few slices of crispy turkey bacon make this feel like a special treat. The possibilities are endless, sometimes I’ll even throw in some sliced bell peppers for color!
Serving Suggestions
This zucchini onion boil is the ultimate team player in the kitchen! I love it piled next to grilled chicken for a complete meal, or spooned over fluffy quinoa when I want something heartier. On lazy nights? It’s perfectly happy standing alone as a light, low-calorie side. My husband even tops his with a fried egg sometimes, now that’s breakfast for dinner done right!
Storage and Reheating
Here’s the scoop on keeping your zucchini onion boil tasting fresh! Store leftovers in an airtight container in the fridge, they’ll stay delicious for up to 3 days. When you’re ready to eat, reheat gently on the stove over medium-low heat or zap it in the microwave for about a minute. Fair warning though, don’t freeze this one unless you want sad, mushy zucchini. The texture just doesn’t hold up well in the freezer, but trust me, it rarely lasts long enough to need freezing anyway!
Nutritional Information
Just so you know, these numbers are estimates, but they’re pretty darn close! Each serving of this zucchini onion boil packs:
- 80 calories, Light enough for seconds!
- 6g fat, All that good olive oil goodness
- 2g protein, Not bad for veggies!
- 6g carbs, Mostly from the zucchini
- 2g fiber, Helps keep you full
Remember, exact amounts might vary slightly based on your zucchini size and how much oil you use. But either way, it’s a nutritional win!
FAQ About Zucchini Onion Boil
I get asked about this recipe all the time, here are the questions that pop up most often!
Can I make this keto-friendly?
Absolutely! Just skip the water and sauté everything in olive oil until tender. The zucchini releases enough moisture on its own, I do this version at least once a week!
How long do leftovers keep?
About 3 days in the fridge, though mine never lasts that long! Store it in an airtight container and reheat gently.
Can I add other vegetables?
Oh yes! Bell peppers are my favorite addition, their sweetness pairs perfectly. Mushrooms and cherry tomatoes work great too. For other vegetable side ideas, check out this resource.
Is this dish freezer-friendly?
Honestly? Not really. The zucchini turns mushy when thawed. It’s so quick to make fresh though!
Try this recipe and share your twists in the comments, I’d love to hear how you make it your own!

