Weight Watchers Crustless Mushroom Spinach Pie

If you love a savory, cheesy pie but want something lighter than a traditional pastry-crust version, this Weight Watchers Crustless Mushroom Spinach Pie is a delicious addition to your meal rotation. It’s packed with tender mushrooms, vibrant spinach, fluffy eggs, and creamy, cheesy flavor—all baked together into a golden, satisfying pie without the crust.

This recipe is perfect for breakfast, brunch, lunch, or a simple meatless dinner. It feels comforting and homemade, yet it’s easy to prepare with everyday ingredients. The mushrooms bring a deep, savory flavor, while spinach adds color and balance. Eggs hold everything together, creating tender slices that are easy to serve warm or save for later.

And because there’s no pastry crust to prepare, you can skip the rolling, chilling, and extra steps. Just sauté the vegetables, whisk the egg mixture, pour everything into a pie dish, and bake until set.

❤️ Why You’ll Love This Recipe

Crustless and satisfying: Enjoy the flavors of a savory pie without making pastry.

Weight Watchers-inspired: Made with lighter ingredient choices that can fit into a Points-conscious meal plan.

Veggie-packed: Mushrooms and spinach bring flavor, color, and texture.

Protein-rich: Eggs and cheese help make each slice satisfying.

Great for meal prep: Make it ahead and enjoy slices throughout the week.

Easy to customize: Add herbs, switch up the cheese, or include extra vegetables.

Perfect any time of day: Serve it for breakfast, brunch, lunch, or a light dinner.

📋 Recipe Information

Ingredients

For the Crustless Mushroom Spinach Pie

8 ounces mushrooms, cleaned and sliced

3 cups fresh spinach, roughly chopped

6 large eggs

½ cup plain nonfat Greek yogurt

½ cup reduced-fat shredded mozzarella cheese

¼ cup grated Parmesan cheese

¼ cup finely diced onion

2 cloves garlic, minced

1 teaspoon olive oil

½ teaspoon salt, or to taste

¼ teaspoon black pepper

½ teaspoon dried Italian seasoning

For a more Points-conscious version, use reduced-fat cheese and plain nonfat Greek yogurt. Exact WW Points depend on your personal plan, ingredient brands, and serving size.

🍳 Equipment Needed

9-inch pie dish

Large skillet

Mixing bowl

Whisk

Cutting board

Sharp knife

Measuring cups and spoons

Silicone spatula

Instructions

Step 1: Prepare the Oven and Pie Dish

Preheat the oven to 375°F (190°C).

Lightly coat a 9-inch pie dish with cooking spray. Set it aside while you prepare the vegetables and egg mixture.

Step 2: Sauté the Mushrooms and Onion

Heat the olive oil in a large skillet over medium heat.

Add the diced onion and sliced mushrooms. Cook for 6–8 minutes, stirring occasionally, until the mushrooms release their moisture and begin to turn golden.

Add the minced garlic and cook for another 30 seconds, just until fragrant.

Cooking the mushrooms first is important because they release quite a bit of moisture. Allowing that moisture to evaporate helps prevent a watery pie.

Step 3: Add the Spinach

Add the chopped spinach to the skillet.

Stir for 1–2 minutes, until the spinach wilts. If excess liquid collects in the pan, continue cooking until most of it evaporates.

Remove the skillet from the heat and let the vegetables cool slightly.

Step 4: Make the Egg Mixture

In a large mixing bowl, whisk together the eggs and nonfat Greek yogurt until smooth.

Add the salt, black pepper, and Italian seasoning. Whisk again until the seasonings are evenly distributed.

Stir in the reduced-fat mozzarella and Parmesan cheese.

Step 5: Assemble the Pie

Spread the mushroom, onion, and spinach mixture evenly across the bottom of the prepared pie dish.

Pour the egg mixture over the vegetables. Use a spatula to gently distribute the filling so the vegetables are spread throughout the pie.

Tap the dish lightly on the counter to help the mixture settle.

Step 6: Bake Until Set

Place the pie dish in the preheated oven.

Bake for 35–40 minutes, or until the center is set and the top is lightly golden.

The center should not jiggle noticeably when you gently move the dish. For food safety, the egg mixture should reach 160°F (71°C).

If the top begins browning too quickly, loosely cover it with foil for the remainder of the baking time.

Step 7: Rest, Slice, and Serve

Remove the pie from the oven and let it rest for 8–10 minutes.

This resting time helps the egg filling settle, making it easier to cut clean slices.

Slice into 6 portions and serve warm. Add a sprinkle of fresh herbs or a little extra black pepper if desired.

💡 Tips for Success

Cook the Mushrooms Thoroughly

Mushrooms contain a lot of moisture. Sauté them until much of that moisture has evaporated to help the pie set properly.

Drain Excess Spinach Liquid

If using frozen spinach, thaw it completely and squeeze out as much water as possible before adding it to the filling.

Whisk the Eggs and Yogurt Well

A smooth egg mixture creates a more even texture. Make sure the yogurt is fully incorporated before adding the cheese.

Avoid Overbaking

Overbaked eggs can become rubbery. Start checking around 30–35 minutes, then continue baking as needed until the center is set and reaches 160°F (71°C).

Let the Pie Rest

Allowing the pie to rest before slicing helps it hold together and makes serving easier.

Delicious Variations

Spinach & Feta Pie

Replace the mozzarella with reduced-fat feta for a tangy, Mediterranean-inspired flavor.

Mushroom Spinach Tomato Pie

Add ½ cup of chopped, seeded tomatoes. Pat them dry before adding so they don’t contribute excess moisture.

Caramelized Onion Version

Cook the onions slowly until golden and sweet before adding the mushrooms. This adds extra savory depth.

Fresh Herb Pie

Add chopped parsley, basil, or chives to the egg mixture for a fresh flavor boost.

Chicken & Spinach Pie

Add ½ cup of cooked, chopped chicken breast for a heartier, higher-protein variation. Update the nutrition and WW Points using the exact ingredients.

🍽️ What to Serve With It

This crustless pie is satisfying on its own, but it also pairs nicely with:

A fresh green salad

Sliced tomatoes and cucumbers

Roasted zucchini

Fresh berries

A bowl of vegetable soup

Whole-grain toast, if it fits your meal plan

For breakfast or brunch, serve a slice with fresh fruit. For lunch or dinner, pair it with a crisp salad or roasted vegetables for a balanced meal.

🥡 Storage, Freezing & Reheating

Refrigerator

Allow the pie to cool, then store slices in an airtight container. Refrigerate within 2 hours and enjoy within 3–4 days.

Freezer

This pie can be frozen, although the texture may become slightly softer after thawing.

Let the pie cool completely.

Slice into individual portions.

Wrap each slice tightly or store in freezer-safe containers.

Freeze for up to 2 months for best quality.

Thaw overnight in the refrigerator before reheating.

Reheating

Microwave: Heat a slice for 30–60 seconds, then continue in short intervals until warmed through.

Oven: Place slices in an oven-safe dish and warm at 325°F (163°C) until heated through.

Air fryer: Reheat at 300°F (149°C) for a few minutes, checking frequently so the edges don’t dry out.

Reheat leftovers to 165°F (74°C). Avoid repeatedly cooling and reheating the same portion.

📊 Nutrition Information

Approximate per serving, based on 6 servings and the ingredients listed. Values vary by brand and ingredient choice.

What About WW Points?

This is a Weight Watchers-inspired recipe, not an official WW recipe with a verified Points value. Points depend on your current plan, personal ZeroPoint foods, exact brands, and portion size.

For the most accurate estimate, enter the exact ingredients into the WW app’s recipe builder and set the yield to 6 servings. Include any toppings or substitutions you use.

❓ Frequently Asked Questions

Is this crustless mushroom spinach pie good for Weight Watchers?

It can be adapted for a Weight Watchers-style eating plan using nonfat Greek yogurt, reduced-fat cheese, and plenty of vegetables. Your Points value will depend on your individual plan and the exact ingredients used.

Can I use frozen spinach?

Yes. Thaw the spinach completely and squeeze out as much liquid as possible before adding it to the skillet. Excess moisture can make the pie watery.

Can I make this pie ahead of time?

Absolutely. Bake the pie, let it cool, and refrigerate it. Reheat individual slices when you’re ready to serve. You can also prepare the vegetables ahead and assemble the pie shortly before baking.

Why is my crustless pie watery?

The most common reason is excess moisture from the mushrooms or spinach. Cook the mushrooms until their liquid evaporates, and drain or squeeze spinach thoroughly before adding it to the egg mixture.

Can I use a different cheese?

Yes. Reduced-fat cheddar, Swiss, feta, or Monterey Jack can all work. The flavor and nutrition will vary depending on the cheese you choose.

Can I make this recipe without Greek yogurt?

Yes. You can replace the yogurt with a small amount of low-fat milk, though the texture may be slightly less creamy. The nutrition and Points value will change.

How do I know when the pie is done?

The center should be set rather than liquid or noticeably jiggly. For food safety, check that the egg mixture reaches 160°F (71°C).

Can I make this pie dairy-free?

You can try an unsweetened, unflavored dairy-free yogurt and dairy-free cheese. The texture and flavor may differ, and the nutrition information will need to be recalculated.

Can I add more vegetables?

Yes. Bell peppers, zucchini, or chopped tomatoes can be added, but cook or drain them first to remove excess moisture.

💚 Final Thoughts

This Weight Watchers Crustless Mushroom Spinach Pie is a simple, satisfying way to enjoy a savory, veggie-packed meal without the fuss of a pastry crust. Tender mushrooms, spinach, fluffy eggs, and melty cheese come together in a dish that’s easy to prepare, easy to portion, and delicious at any time of day.

Make it for weekend brunch, prep it for weekday breakfasts, or serve it with a fresh salad for a cozy meatless dinner. With a few simple ingredient choices, it’s easy to customize this recipe to your taste and your meal plan.