Quick Recipe Version (TL;DR)
Quick Ingredients
- 1 cup (240 mL) liquid egg whites (or 6 large whole eggs)
- 1 cup (30 g) baby spinach, finely chopped
- 1/3 cup (50 g) crumbled feta
- 2 tablespoons (30 mL) milk (optional, for softer texture)
- 1/2 teaspoon dried oregano
- 1/4 teaspoon kosher salt
- 1/8 teaspoon black pepper
- Nonstick spray or 1 teaspoon olive oil (for the cups)
Do This
- 1. Lightly grease 6 silicone muffin cups; set them on a microwave-safe plate.
- 2. Wilt chopped spinach in the microwave for 30 seconds; squeeze very dry.
- 3. Whisk egg whites (or eggs) with milk (optional), oregano, salt, and pepper.
- 4. Stir in spinach and feta.
- 5. Divide mixture evenly among cups (about 3 tablespoons each).
- 6. Microwave at 70% power for 3:00 minutes; rotate plate halfway through.
- 7. Rest 1 minute, then microwave in 20-second bursts until just set; cool 2 minutes and unmold.
Why You’ll Love This Recipe
- Starbucks-style at home: Tender, high-protein bites with spinach, feta, and oregano flavor.
- Fast and fuss-free: No oven, no water bath; just silicone cups and a microwave.
- Meal-prep friendly: Make once, then reheat quick breakfasts all week.
- Flexible: Use egg whites or whole eggs and easily swap in other veggies or cheeses.
Grocery List
- Produce: baby spinach
- Dairy: feta cheese, milk (optional)
- Pantry: dried oregano, kosher salt, black pepper, olive oil or nonstick spray
Full Ingredients
Base
- Egg whites option: 1 cup (240 mL) liquid egg whites (or whites from 8 large eggs)
- Whole egg option: 6 large eggs
- Milk (optional): 2 tablespoons (30 mL) milk (any kind; helps keep the texture a bit softer)
Mix-ins
- Spinach: 1 cup (30 g) baby spinach, finely chopped
- Feta: 1/3 cup (50 g) crumbled feta cheese
Seasoning
- 1/2 teaspoon dried oregano
- 1/4 teaspoon kosher salt
- 1/8 teaspoon freshly ground black pepper
For the cups
- Nonstick spray or 1 teaspoon olive oil (total, for greasing)

Step-by-Step Instructions
Step 1: Set up your silicone cups
Place 6 silicone muffin cups (standard size) on a microwave-safe plate or a small microwave-safe tray. Lightly coat the inside of each cup with nonstick spray or brush with a little olive oil. This helps the egg bites release cleanly.
Step 2: Wilt and dry the spinach (this prevents watery bites)
Add the finely chopped spinach to a microwave-safe bowl. Microwave on high for 30 seconds, just until wilted.
Transfer spinach to a clean kitchen towel or several paper towels and squeeze firmly to remove as much moisture as possible. You should end up with a small, dry mound of spinach; this step is key for a custardy (not spongy) texture.
Step 3: Whisk the egg mixture
In a medium bowl, whisk together:
- 1 cup (240 mL) egg whites (or 6 whole eggs)
- 2 tablespoons (30 mL) milk (optional)
- 1/2 teaspoon dried oregano
- 1/4 teaspoon kosher salt
- 1/8 teaspoon black pepper
Whisk until the mixture looks uniform and slightly frothy, about 20 to 30 seconds.
Step 4: Add spinach and feta
Stir the squeezed-dry spinach into the egg mixture, then fold in the 1/3 cup (50 g) crumbled feta. Try to distribute the feta evenly so every bite gets a little tangy, salty cheese.
Step 5: Fill the cups evenly
Divide the mixture among the greased silicone cups, filling each about 3/4 full (roughly 3 tablespoons per cup). Give the plate a gentle tap on the counter to settle the mixture and pop any large air bubbles.
Step 6: Microwave gently to avoid rubbery eggs
Microwave (with the cups on the plate) at 70% power for 3 minutes, rotating the plate 180 degrees halfway through if your microwave heats unevenly.
After 3 minutes, the centers may look slightly glossy but should not be liquid. Let them sit in the microwave (door closed) for 1 minute to finish cooking with residual heat.
Step 7: Check doneness, then cool and unmold
Check one bite by gently pressing the center: it should feel set and springy, not sloshy. If needed, microwave in 20-second bursts at 70% power until just set. (Most microwaves finish in a total of 3:20 to 4:20.)
Let the egg bites cool in the cups for 2 minutes, then carefully peel the silicone away and lift them out. Serve warm.
Pro Tips
- Squeeze spinach very dry: Extra moisture is the #1 reason microwave egg bites turn watery.
- Use reduced power: Cooking at 70% power helps prevent tough, rubbery eggs and encourages a more even set.
- Don’t overcook: Pull them when they’re just set. They continue to firm up as they rest for 1 to 3 minutes.
- Even portioning matters: If one cup is much fuller than the others, it will take longer and can make the rest overcook.
- Grease the cups well: Silicone is nonstick-ish, but eggs still like to cling without a little oil or spray.
Variations
- Whole-egg richer bites: Use 6 whole eggs instead of egg whites and keep the milk optional. The texture will be a bit richer and more custardy.
- Spicy Mediterranean: Add 1 tablespoon chopped sun-dried tomatoes (patted dry) and a pinch of red pepper flakes.
- Protein boost: Add 1/4 cup (30 g) finely diced cooked turkey or ham. Keep pieces small so the bites hold together.
Storage & Make-Ahead
Cool completely, then store in an airtight container in the refrigerator for up to 4 days. For longer storage, freeze on a plate until firm, then transfer to a freezer bag and freeze for up to 2 months.
To reheat from the fridge: microwave 2 bites on a plate for 25 to 35 seconds on high.
To reheat from frozen: microwave 2 bites for 60 seconds at 50% power, then 20 to 30 seconds on high until hot in the center.
Nutrition (per serving)
Approximate nutrition for 1 serving (2 egg-white bites) made with liquid egg whites and optional milk: 110 calories, 14 g protein, 5 g fat, 2 g carbs, 1 g fiber, 1 g sugar, 360 mg sodium. Values vary by brand of feta and exact portions.
