Easy Crustless Spinach Quiche

Ingredients

• 10 oz Frozen Spinach (Thawed and well drained)
• 1 Tbsp Olive Oil (Extra‑virgin recommended)
• 1 small White Onion (Diced; can substitute yellow or sweet onion)
• 4 oz Cremini Mushrooms (Sliced; can use white button mushrooms)
• 2 cloves Garlic (Minced)
• 8 oz Sharp Cheddar Cheese (Shredded; can use mild cheddar)
• 6 oz Feta Cheese (Crumbled; can use reduced‑fat feta)
• 5 Large Eggs (Room temperature)
• 0.5 cup Milk (2% milk; can use whole or skim)
• 0.25 tsp Salt
• 0.25 tsp Black Pepper

Instructions

1. Drain and prepare spinach

   Thaw the frozen spinach, then gather it in your hand and squeeze out all excess liquid into a bowl. Pat the remaining spinach dry with paper towels.

   Time: PT10M

2. Preheat oven and grease pie plate

   Preheat the oven to 350°F. Lightly grease a 9‑inch deep‑dish pie plate with a little olive oil or butter.

   Time: PT10M

   Temperature: 350°F

3. Sauté onion, mushrooms, and garlic

   Heat 1 Tbsp olive oil in a large skillet over medium‑high heat. Add the diced onion and sliced mushrooms; sauté until tender, about 5‑7 minutes. Add the minced garlic and cook another 1‑2 minutes, stirring constantly.

   Time: PT8M

   Temperature: medium‑high

4. Add spinach to skillet

   Turn off the heat. Add the drained spinach to the skillet, break up any clumps and stir to combine with the vegetables.

   Time: PT2M

5. Assemble filling and add cheese

   Spoon the vegetable‑spinach mixture into the greased pie plate. Sprinkle the shredded sharp cheddar and crumbled feta over the top and gently stir so the cheeses are evenly distributed.

   Time: PT5M

6. Whisk egg mixture

   In a mixing bowl, whisk together 5 large eggs, 1/2 cup 2% milk, 1/4 tsp salt and 1/4 tsp black pepper until smooth and slightly frothy.

   Time: PT3M

7. Add custard to pie

   Pour the egg‑milk mixture over the cheese‑vegetable layer, tilting the plate and using a spoon to help the custard fill any gaps.

   Time: PT1M

8. Bake quiche

   Place the pie plate in the preheated oven and bake for 40‑45 minutes, until the center is set and the top is lightly golden.

   Time: PT45M

   Temperature: 350°F

9. Cool and serve

   Remove the quiche from the oven and let it cool on a rack for about 10 minutes before slicing and serving.

   Time: PT10M

Nutrition Facts

Calories

327

Protein

19g

Carbohydrates

4g

Fat

24g

Fiber

1g

Ingredient Substitutions

• Instead of Frozen Spinach: Fresh spinach (about 12 oz), Canned spinach (drained)
• Instead of Olive Oil: Butter, Vegetable oil
• Instead of White Onion: Shallots, Leeks
• Instead of Cremini Mushrooms: White button mushrooms, Portobello mushrooms (sliced)
• Instead of Garlic: Garlic powder (1/4 tsp)
• Instead of Sharp Cheddar Cheese: Gruyère, Monterey Jack
• Instead of Feta Cheese: Goat cheese, Ricotta
• Instead of Large Eggs: Egg replacer (not recommended)
• Instead of Milk: Unsweetened almond milk, Soy milk
• Instead of Salt: Sea salt, Kosher salt
• Instead of Black Pepper: White pepper

Equipment Needed

• Large Skillet
• Mixing Bowl
• Whisk
• 9‑Inch Deep‑Dish Pie Plate
• Oven
• Knife
• Cutting Board
• Measuring Cups and Spoons
• Spatula or Wooden Spoon
• Paper Towels (optional)

Critical Steps — Do Not Skip

• Drain and prepare spinach thoroughly to avoid soggy texture
• Bake until the center is set; under‑baking leaves a runny quiche

Chef Tips from the Video

• Use sharp cheddar for a more pronounced flavor; mild cheddar works but is less tangy.
• Crumble the feta evenly to distribute its salty bite throughout the quiche.
• Let the quiche rest after baking; this makes slicing cleaner.

Troubleshooting

Storage

Refrigerator: Cover and store in the fridge for up to 3 days.

Freezer: Wrap tightly with plastic wrap and foil; freeze up to 2 months. Reheat in oven before serving.

Room temperature: Do not leave at room temperature longer than 2 hours.

Make-Ahead Tips

• The quiche can be baked a day ahead and reheated in a 350°F oven for 10‑15 minutes.
• Cool completely before refrigerating or freezing.

Frequently Asked Questions