
This Costco-style spinach salad is the kind of loaded salad I make when I want greens but also want lunch to feel substantial. Spinach is the base, then tomatoes, mushrooms, bacon, red onion, croutons, dried cranberries, hard-boiled eggs, cheese, and poppyseed dressing turn it into a full bowl.
I like the contrast most: salty bacon, sweet cranberries, crisp onions, soft eggs, and crunchy croutons. Poppyseed dressing ties it together with sweetness and tang.
The only rule I follow is not dressing the whole bowl too early. Spinach wilts quickly once dressing hits it, so I keep the dressing on the side unless I know the salad will be eaten right away.
Why I keep coming back to this
- It is hearty enough for lunch but still works as a side salad.
- The toppings bring sweet, salty, creamy, and crunchy elements.
- The ingredient list is easy to prep ahead in separate containers.
- Poppyseed dressing pairs naturally with spinach and dried cranberries.
- Bacon and eggs add enough protein to make the salad satisfying.
- It scales easily for a big bowl or individual meal-prep containers.
What I use and why it matters
- Tomatoes, 2.I use firm tomatoes and cut them shortly before serving so they do not water down the bowl.
- Mushrooms, 1 1/2 cups.Thin slices give an earthy bite without overwhelming the spinach.
- Spinach, 20 ounces.I dry it well because wet spinach repels dressing.
- Bacon, 12 slices.Crisp bacon crumbles cleanly and adds salt.
- Red onion, 1/2 cup.Thin slices give sharpness; I rinse them if they taste too strong.
- Croutons, 2 cups.I add them last so they stay crunchy.
- Dried cranberries, 1 cup.They bring sweetness and chew.
- Hard-boiled eggs, 2.Eggs make the salad feel more like a meal.
- Shredded cheese and poppyseed dressing.Cheese adds richness, and the dressing brings tangy sweetness.
Small prep details that help
Before I start costco spinach salad, I read through the steps once and set out the pieces that usually slow me down: a sharp knife, a clean board, measuring spoons, the right pan, and a towel for quick cleanup. That small pause keeps me from making rushed choices once heat or dressing or dough is involved. I also check the ingredient temperatures. Cold dairy, wet greens, damp seafood, or a chilled roast can all change timing, so I would rather notice that at the counter than halfway through cooking.
I measure the seasonings into small piles or bowls when the recipe moves quickly. It feels fussy for about thirty seconds, then it pays me back when I am not trying to open a spice jar with messy hands. I also decide where the finished food will land before I begin. A wire rack, serving platter, clean jar, or cooling space may sound minor, but I have learned that good food gets clumsy fast when I am hunting for a place to put a hot pan.
How I make it
Step 1 — Prep the vegetables
I chop the tomatoes, slice the mushrooms, wash and dry the spinach, and slice the red onions. If the onions are strong, I soak them in cold water for 10 minutes and drain them well.
Step 2 — Cook the bacon
I fry the bacon until crisp, then move it to a paper towel-lined plate and chop it once cool. Crisp bacon holds up better than chewy bacon in a dressed salad.
Step 3 — Gather the toppings
In a large bowl, I combine the spinach, tomatoes, mushrooms, red onion, chopped bacon, croutons, dried cranberries, hard-boiled eggs, and shredded cheese.
Step 4 — Dress gently
I drizzle poppyseed dressing over the ingredients and toss gently with tongs. I start with less dressing than I think I need because spinach collapses quickly.
Step 5 — Taste and finish
I taste and adjust with salt, pepper, or a little extra dressing. If serving later, I keep the croutons and dressing separate until the last minute.
What I watch for
The clock gives me a starting point for costco spinach salad, but I do not let it make the final decision. I watch the texture, the smell, and the way the food sits in the pan. If something is browning before the center is ready, I lower the heat, cover loosely, or move the pan. If something looks pale or watery, I give it more space, more time, or a few minutes uncovered. That kind of small adjustment is usually what separates a dependable batch from one that tastes rushed.
I also taste or check seasoning at the point where it can still be fixed. For salads and dressings, I taste on a leaf, cracker, or piece of vegetable instead of a plain spoon. For casseroles and baked dishes, I taste the sauce or filling before it is covered. For meat and fish, I trust temperature first and appearance second. I have ruined more food by guessing than by taking ten seconds to check.
If a batch does not behave exactly the way I expected, I try to make one calm correction instead of three panicked ones. A splash of liquid can loosen a thick sauce. A few uncovered minutes can dry a wet top. A pinch of salt can wake up a flat filling. A short rest can turn a messy scoop into a clean serving. I build those little fixes into my cooking now because real kitchens are never as tidy as written instructions.
Tips from my kitchen
- Dry the spinach.A salad spinner makes a real difference here.
- Add croutons last.They turn soft if they sit under dressing.
- Rinse sharp onions.A quick cold-water soak keeps onion from dominating every bite.
- Use crisp bacon.Soft bacon gets chewy once it meets dressing.
- Build individual bowls.Meal-prep portions hold better than one fully tossed giant bowl.
Variations I have actually tried
- Chicken salad:I add sliced grilled chicken for a main-dish version.
- Vegetarian bowl:I skip bacon and add toasted pecans or sunflower seeds.
- Blue cheese:I swap shredded cheese for blue cheese crumbles when I want a sharper salad.
- Apple crunch:I add thin apple slices right before serving.
- Lighter dressing:I use half poppyseed dressing and half lemon vinaigrette.
Storing and making it ahead
I store the components separately whenever possible: greens in one container, bacon and eggs in another, croutons at room temperature, and dressing in a jar.
A dressed spinach salad is best the day it is made. Undressed components keep 2-3 days, though tomatoes are best added fresh.
What I serve with it
I serve this salad with soup, baked salmon, roast chicken, or a simple sandwich. For lunch, I pile it into a wide bowl so the toppings do not all sink to the bottom.
Frequently asked questions
Can I make it vegetarian?
Yes. I leave out the bacon and add toasted nuts, seeds, or extra egg for richness.
Can I make it ahead?
I prep the toppings ahead but keep the dressing and croutons separate until serving.
What dressing works besides poppyseed?
A balsamic vinaigrette, honey mustard dressing, or lemon vinaigrette all work with the spinach and cranberries.
How do I keep spinach from wilting?
I dry it thoroughly, chill it, and dress it at the last minute.
Can I use baby kale?
Yes. Baby kale is sturdier and can handle dressing a little longer than spinach.
If you build this salad, I would love to hear which topping disappears first in your bowl.

Costco Spinach Salad
Description
A loaded spinach salad with tomatoes, mushrooms, bacon, red onion, croutons, dried cranberries, hard-boiled eggs, shredded cheese, and poppyseed dressing. I keep the dressing separate until serving.
Ingredients You’ll Need
Instructions
- I chop the tomatoes, slice the mushrooms, wash and dry the spinach, and slice the red onions. If the onions are strong, I soak them in cold water for 10 minutes and drain them well.
- I fry the bacon until crisp, then move it to a paper towel-lined plate and chop it once cool. Crisp bacon holds up better than chewy bacon in a dressed salad.
- In a large bowl, I combine the spinach, tomatoes, mushrooms, red onion, chopped bacon, croutons, dried cranberries, hard-boiled eggs, and shredded cheese.
- I drizzle poppyseed dressing over the ingredients and toss gently with tongs. I start with less dressing than I think I need because spinach collapses quickly.
- I taste and adjust with salt, pepper, or a little extra dressing. If serving later, I keep the croutons and dressing separate until the last minute.
Nutrition Facts
Servings 8
- Amount Per Serving
- Calories 65kcal
- % Daily Value *
- Total Fat 1g2%
- Trans Fat 0.0g
- Sodium 57mg3%
- Potassium 445mg13%
- Total Carbohydrate 15g5%
- Dietary Fiber 3g12%
- Sugars 11g
- Protein 2g4%
- Calcium 72 mg
- Iron 2.1 mg
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.
Note
Dry the spinach. A salad spinner makes a real difference here.
Add croutons last. They turn soft if they sit under dressing.
Rinse sharp onions. A quick cold-water soak keeps onion from dominating every bite.
Use crisp bacon. Soft bacon gets chewy once it meets dressing.
Frequently Asked Questions
Yes. I leave out the bacon and add toasted nuts, seeds, or extra egg for richness.
I prep the toppings ahead but keep the dressing and croutons separate until serving.
A balsamic vinaigrette, honey mustard dressing, or lemon vinaigrette all work with the spinach and cranberries.
I dry it thoroughly, chill it, and dress it at the last minute.
Yes. Baby kale is sturdier and can handle dressing a little longer than spinach.