Baked Mini Frittata with Sautéed Spinach, Tomatoes, and Onion with Extra Sharp White Cheddar

I was in the mood for a healthy lunch, so I looked in the fridge and found a couple of eggs, a handful of spinach, a bit of an onion, a little extra sharp white cheddar, and a few grape tomatoes, so I made this baked mini frittata with sautéed spinach, tomatoes, and onion recipe. The vegetarian mini frittata turned out fluffy and so delicious, and paired nicely with some roasted bacon and breakfast potatoes.
Baked Mini Frittata with Sautéed Spinach, Tomatoes, and Onion with Extra Sharp White Cheddar
Ingredients:
- 1 tsp olive oil
- 1 handful of spinach
- 3 tbsp yellow onion, diced
- A handful of grape tomatoes, halved
- 1 clove of garlic, minced
- Pinch of crushed red pepper flakes, to taste
- Sea salt and freshly cracked pepper, to taste
- 2 eggs, well-beaten
- 1 tbsp milk
- 2 tbsp extra-sharp white cheddar, shredded

How to Make a Baked Mini Frittata with Sautéed Spinach, Tomatoes, and Onion with Extra Sharp White Cheddar
Preheat the oven to 350 degrees. Coat a mini baking dish with olive oil cooking spray.
Heat the olive oil in a large skillet over medium heat, then add the diced onion and sauté, stirring occasionally, for a few minutes.
Add the spinach and tomatoes, then cook, stirring occasionally, for 2 minutes, or until softened.
Add the minced garlic to the pan, then season with a pinch of crushed red pepper flakes, sea salt, and freshly cracked pepper to taste. Cook and stir constantly for 30 seconds. Remove from the heat.
Whisk together the eggs and milk. Season with sea salt and freshly cracked pepper to taste.
Sprinkle the bottom of the mini baking dish with half of the spinach & tomato mixture, then top with extra sharp cheddar.

Add the egg mixture, then sprinkle the top with the remaining spinach & tomato mixture and extra sharp cheddar.

Place into the oven and bake for 25-30 minutes, until cooked through.
Remove from the oven and serve immediately. Enjoy.

Equipment
Ingredients
- 1 tbsp olive oil
- 1 handful of spinach
- 3 tbsp yellow onion diced
- A handful of grape tomatoes halved
- 1 clove of garlic minced
- Pinch of crushed red pepper flakes
- Sea salt and freshly cracked pepper to taste
- 2 eggs well-beaten
- 1 tbsp milk
- 2 tbsp extra sharp white cheddar shredded
Instructions
- Preheat the oven to 350 degrees. Coat a mini baking dish with cooking spray.
- Heat the olive oil in a sauté pan over medium heat then add the diced onion and sauté, stirring occasionally, for a few minutes. Add the spinach and tomatoes then cook, stirring occasionally, for 2 minutes, or until softened. Add the minced garlic to the pan then season with a pinch of crushed red pepper flakes, sea salt, and freshly cracked pepper, to taste. Cook and stir constantly for 30 seconds. Remove from the heat.
- Whisk together the eggs and milk. Season with sea salt and freshly cracked pepper, to taste.
- Sprinkle the bottom of the mini baking dish with half of the spinach & tomato mixture then top with extra sharp cheddar.
- Add the egg mixture then sprinkle the top with the remaining spinach & tomato mixture and extra sharp cheddar.
- Place into the oven and bake for 25-30 minutes, until cooked through. Remove from the oven and serve immediately. Enjoy.



Looks like a great through together meal to me and your presentations always look so appealing.
Eggs with cheese are always a great combination. Add spinach and tomato and I”m really sold!
I like the mini! My kids really like frittatas and I know they’d like this mini version.
Mini versions are always prettier and easier for the portion control. This looks delish, Pam.
Baked egg dishes are one of my favorites. Your recipe looks delicious.
adorable dish, first of all. and i love the components and how the eggs puffed up so nicely! what a fine meal. 🙂
My kinda lunch or breakfast Pam. Thanks for sharing…
Fabulous recipe. Amazing one.
Frittatas always sound good to me! Love the ingredients in this one!