Make-Ahead Veggie Egg Muffin Cups

Egg muffin cups are the breakfast meal-prep that actually survives contact with real life: a dozen fluffy, cheesy egg cups baked in a muffin tin on Sunday, ready to be grabbed, reheated for a minute, and eaten on the way out the door all week. They taste like a tiny crustless quiche, because that is exactly what they are.

The vegetables are the variable, the method is the constant. Peppers and spinach are our house combination — sweet, green and quick — with cheddar for the savory depth that makes two cups feel like a real breakfast. The same tin takes the breakfast-sausage treatment happily, in the spirit of our Easy Shakshuka Baked Eggs: eggs plus whatever the fridge offers, baked until just set.

They sit happily in our Breakfast collection next to the weekend bakes, but their real job is weekday insurance. Make them once and the 7 a.m. question of what to eat is answered until Friday — reheat, coffee, go.

Cook the water out of the vegetables first

Raw vegetables weep as they bake, and in a small egg cup that liquid has nowhere to go — it pools, and the cups come out spongy and wet on the bottom. Five minutes in a skillet drives off the peppers' moisture and wilts the spinach so it can be squeezed dry. It is the one active step in the recipe and the entire difference between fluffy cups and soggy ones.

Just set means just set

Eggs keep cooking after the tin leaves the oven, carried by the heat of the pan itself. Pull the cups when the centers are just set with the faintest jiggle and the tops look matte, not shiny-wet — about 20 minutes. Five extra minutes 'to be safe' is how egg cups turn rubbery and start to weep in the fridge. A slight underbake at the pull is a perfect bake after the rest.

Ingredients

• 1 tablespoon olive oil (15 ml)
• 1 small red bell pepper, finely diced (about 120 g)
• 2 cups baby spinach, roughly chopped (60 g)
• 2 green onions, thinly sliced (about 30 g)
• 8 large eggs
• 1/4 cup whole milk (60 ml)
• 1/2 teaspoon kosher salt (3 g)
• 1/4 teaspoon black pepper (0.75 g)
• 1/4 teaspoon garlic powder (0.75 g)
• 3/4 cup shredded cheddar cheese (85 g), divided
• Olive oil spray or soft butter, for the tin

Amounts are for the yield below. US customary measures first, grams in brackets for scale users.

Step-by-step instructions

1. Heat the oven and prep the tin. Preheat the oven to 350°F (177°C). Generously grease a standard 12-cup muffin tin with olive oil spray or soft butter, getting into every corner — egg cups are champion stickers, and a silicone tin or paper liners are fair insurance if yours is prone to it.
2. Cook the vegetables dry. Heat the olive oil in a skillet over medium heat. Cook the diced pepper for 3 to 4 minutes until softened. Add the spinach and stir for 1 to 2 minutes, just until wilted. Tip the vegetables onto a plate, spread them out to cool slightly, and press the spinach gently with a spoon to leave its liquid behind in the pan.
3. Whisk the eggs. In a large bowl or a big measuring jug — a spout makes filling the tin much easier — whisk the eggs, milk, salt, pepper and garlic powder until completely uniform and slightly frothy, with no streaks of white remaining.
4. Fill the cups. Divide the cooked vegetables and the green onions evenly among the 12 cups. Sprinkle half the cheddar over the vegetables. Pour the egg mixture over the top, filling each cup about three-quarters full — the cups puff as they bake and settle as they cool.
5. Top and bake. Scatter the remaining cheddar over the cups. Bake for 18 to 20 minutes, until the eggs are just set in the center with the faintest jiggle and the tops have lost their wet shine. A knife inserted in a center cup should come out clean.
6. Cool, release and store. Cool the cups in the tin for 5 minutes — they will shrink slightly away from the sides as they rest, which makes them far easier to release. Run a thin knife or offset spatula around each cup and lift them out. Serve warm, or cool completely before refrigerating for the week.

Nutrition estimate

Nutrition figures are estimates calculated from standard ingredient data for the yield stated. Your actual values will vary with brands, substitutions and portion sizes — treat them as a guide, not a guarantee.

Storage & reheating

Cool the cups completely, then refrigerate in an airtight container for up to 4 days. Reheat in the microwave for 30 to 45 seconds, or in a 325°F (163°C) oven for 8 minutes for a fresher texture. The cups freeze well for up to 2 months, wrapped individually; thaw overnight in the fridge or microwave from frozen at half power for about 90 seconds. Like all egg dishes, they are best before the end of day four — make a fresh tin rather than stretching them. Nutrition figures are estimates from standard ingredient data and vary with brands and substitutions, calculated per 2 muffin cups.

Make-Ahead Veggie Egg Muffin Cups

★★★★★★★★★★ FryDaily kitchen score 4.8/5 — our own editorial rating from testing, not reader reviews.

Fluffy, cheesy and ready to grab — a week of real breakfasts from one muffin tin.

Yield: 6 servings  ·  Scale: 1x2x3x

Prep15 minutes

Cook20 minutes

Total35 minutes

Servings6 servings

Calories150 kcal

Ingredients

• 1 tablespoon olive oil (15 ml)
• 1 small red bell pepper, finely diced (about 120 g)
• 2 cups baby spinach, roughly chopped (60 g)
• 2 green onions, thinly sliced (about 30 g)
• 8 large eggs
• 1/4 cup whole milk (60 ml)
• 1/2 teaspoon kosher salt (3 g)
• 1/4 teaspoon black pepper (0.75 g)
• 1/4 teaspoon garlic powder (0.75 g)
• 3/4 cup shredded cheddar cheese (85 g), divided
• Olive oil spray or soft butter, for the tin

Tick ingredients off as you prep, and tap a step below to mark it done as you cook. Scaling adjusts the listed amounts - seasoning to taste stays your call.

Instructions

1. Heat the oven and prep the tin. Preheat the oven to 350°F (177°C). Generously grease a standard 12-cup muffin tin with olive oil spray or soft butter, getting into every corner — egg cups are champion stickers, and a silicone tin or paper liners are fair insurance if yours is prone to it.
2. Cook the vegetables dry. Heat the olive oil in a skillet over medium heat. Cook the diced pepper for 3 to 4 minutes until softened. Add the spinach and stir for 1 to 2 minutes, just until wilted. Tip the vegetables onto a plate, spread them out to cool slightly, and press the spinach gently with a spoon to leave its liquid behind in the pan.
3. Whisk the eggs. In a large bowl or a big measuring jug — a spout makes filling the tin much easier — whisk the eggs, milk, salt, pepper and garlic powder until completely uniform and slightly frothy, with no streaks of white remaining.
4. Fill the cups. Divide the cooked vegetables and the green onions evenly among the 12 cups. Sprinkle half the cheddar over the vegetables. Pour the egg mixture over the top, filling each cup about three-quarters full — the cups puff as they bake and settle as they cool.
5. Top and bake. Scatter the remaining cheddar over the cups. Bake for 18 to 20 minutes, until the eggs are just set in the center with the faintest jiggle and the tops have lost their wet shine. A knife inserted in a center cup should come out clean.
6. Cool, release and store. Cool the cups in the tin for 5 minutes — they will shrink slightly away from the sides as they rest, which makes them far easier to release. Run a thin knife or offset spatula around each cup and lift them out. Serve warm, or cool completely before refrigerating for the week.

Calories: 150 kcalProtein: 10 gCarbohydrates: 3 gFat: 11 gSaturated fat: 4 gSodium: 320 mgFiber: 1 gSugar: 2 g

Tested in the FryDaily kitchen, October 2026. Printing? This card is designed to print cleanly on its own.

Frequently asked questions