Kalyn's Kitchen

Roasted Green Pepper and Tomato Breakfast Casserole with Feta

Roasted Green Pepper and Tomato Breakfast Casserole uses roasted cherry tomatoes and bell pepper in a low-carb breakfast casserole. And this recipe is loaded with flavor from Feta and oregano. 

PIN this breakfast casserole with green pepper, tomato, and Feta!

Roasted Green Pepper and Tomato Breakfast Casserole with Feta finished breakfast casserole in baking dish

This tasty Roasted Green Pepper and Tomato Breakfast Casserole is a recipe I created when I was just making something to eat, and I had one of those big containers of cherry tomatoes from Costco, and the recipe turned out so well I decided to make it again and take photos for the blog. I always have a hard time using all the tomatoes before they start to shrivel, and when I was thinking about what to do with slightly-shriveled cherry tomatoes I hit on the idea of roasting them for a breakfast casserole. There was a green bell pepper in the fridge, and adding some dried oregano and Feta cheese gave it a bit of Greek flavor.

I’ve made a lot of low-carb breakfast casseroles through the years simply combining what’s in the fridge, I think this new combination is definitely a winner. And if anyone is wondering why I’m making breakfast casserole when it’s 90 degrees in the shade, I cooked it in my Oster Toaster Oven (affiliate link)! 

What ingredients do you need for this recipe?

  • green bell pepper
  • olive oil
  • Dried Oregano (affiliate link)
  • cherry tomatoes
  • crumbled Feta cheese
  • 10 eggs
  • Spike Seasoning (affiliate link), or other all-purpose seasoning blend
  • salt and fresh ground black pepper

Can you make this recipe with fresh chopped tomatoes?

If you have lots of garden tomatoes, you can definitely make this recipe with a cup of fresh-chopped tomatoes instead of cherry tomatoes. I’d cut the tomatoes and drain them in a colander before you roast them.

What if you’re not a fan of Feta cheese?

If you’re not a fan of Feta, use another white cheese like goat cheese, Swiss, or Mozzarella in this recipe.

Roasted Green Pepper and Tomato Breakfast Casserole with Feta and Oregano process shots collage

How to make Roasted Green Pepper and Tomato Breakfast Casserole:

(Scroll down for complete printable recipe including nutritional information.)

  1. Cut the green pepper into short strips.
  2. Brush the baking dish with olive oil, then add peppers, sprinkle with oregano and roast peppers in a 375F/190C oven for about 10 minutes.
  3. While peppers roast, cut cherry tomatoes in half.
  4. Add the cut tomatoes to the casserole dish, and stir to distribute. Roast about 15 minutes more, or until the tomatoes are starting to look a bit shriveled.
  5. Beat the eggs and crumble the Feta.
  6. Sprinkle crumbled Feta cheese over the roasted tomatoes and bell pepper.
  7. Pour over the beaten egg that’s seasoned with Spike Seasoning (affiliate link), salt, and fresh ground black pepper. (I always stir this a little to get the ingredients well-distributed in the egg.)
  8. Bake the casserole about 30-35 minutes (or a bit less if you use a shallower dish than I did), or until the top is lightly browned and eggs are set.
  9. It will puff up a bit like this when it first comes out of the oven, but it settles down after it cools for a few minutes.
  10. Serve Roasted Green Pepper and Tomato Breakfast Casserole hot.
  11. This is good with a little sour cream to add at the table if you’re a sour cream fan.

Roasted Green Pepper and Tomato Breakfast Casserole with Feta and Oregano found on KalynsKitchen.com

More Savory Breakfasts to Enjoy:

Crustless Three- Cheese Tomato-Basil Quiche ~ Kalyn’s Kitchen
Tomato, Pepper, and Egg Breakfast Skillet ~ Country Cleaver
Zucchini Frittata ~ Kalyn’s Kitchen
Baked Egg Tomato Breakfast Cups ~ Reluctant Entertainer
Zucchini and Green Chile Breakfast Casserole ~ Kalyn’s Kitchen
Tomato Breakfast Tart ~ Family Food on the Table

Weekend Food Prep:

This recipe has been added to a new category called Weekend Food Prep  to help you find recipes you can prep or cook on the weekend and eat during the week!

Roasted Green Pepper and Tomato Breakfast Casserole

Roasted Green Pepper and Tomato Breakfast Casserole

Yield 6 servings
Prep Time 20 minutes
Cook Time 55 minutes
Total Time 1 hour 15 minutes

This delicious low-carb Roasted Green Pepper and Tomato Breakfast Casserole uses cherry tomatoes so you can make it any time of year!


  • 1 green bell pepper, seeds removed and cut into thin strips
  • olive oil, for brushing baking pan (or use nonstick spray)
  • 1/2 tsp. dried oregano (optional, but good)
  • 1 cup cherry tomatoes, sliced in half (see notes)
  • 1 cup crumbled Feta cheese (more or less to taste)
  • 10 eggs
  • 1 tsp. Spike Seasoning
  • salt and fresh ground black pepper for seasoning eggs


  1. Preheat oven or toaster oven to 375F/190C.
  2. Brush 9″ x 13″ (or similar size) baking dish with olive oil, including the sides, or spray with nonstick spray.
  3. Cut out seeds from green pepper, then cut into short thin slices.
  4. Put green pepper into baking dish, sprinkle dried oregano over, and roast for 10 minutes.
  5. While green pepper roasts, cut cherry tomatoes in half. Break eggs into a bowl and beat until egg yolks and whites are well combined.
  6. Season eggs with Spike Seasoning (affiliate link), salt, and fresh ground black pepper.
  7. After peppers roast for 10 minutes, add cut cherry tomatoes and stir to combine.
  8. Put dish back in oven and roast 15 minutes more, or until tomatoes start to look slightly cooked.
  9. Sprinkle Feta cheese over roasted peppers and tomatoes, then pour beaten eggs over. (I used a fork to stir slightly so the roasted peppers and tomatoes were evenly distributed in the eggs.)
  10. Return pan to oven and cook for about 30 minutes, or until the top is lightly browned and eggs are set. (I had a deep dish, so if you’re using a flatter dish it will take less time.
  11. It will puff up a bit when it cooks, but after it cools for a few minutes the casserole will settle.)
  12. Serve hot.
  13. This is good served with a dollop of low-fat sour cream or plain yogurt.
  14. This casserole can be kept in the fridge and reheated in a microwave, but be careful not to microwave too long or the eggs will get rubbery.


This is a perfect way to use those last few cherry tomatoes that are getting a bit shriveled.

This recipe created by Kalyn when she had a surplus of cherry tomatoes that needed to be used!

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 230Total Fat: 16gSaturated Fat: 7gUnsaturated Fat: 8gCholesterol: 363mgSodium: 775mgCarbohydrates: 5gFiber: 1gSugar: 3gProtein: 16g

Nutrition information is automatically calculated by the Recipe Plug-In I am using. I am not a nutritionist and cannot guarantee 100% accuracy, since many variables affect those calculations.

If you make this recipe I'd love to hear how it turns out. Leave a star rating or share on social media with the hashtag #KALYNSKITCHEN, thanks!

Low-Carb Diet / Low-Glycemic Diet / South Beach Diet Suggestions:
Roasted Green Pepper and Tomato Breakfast Casserole is a good breakfast dish for any low-glycemic or low-carb diet, including any phase of the original South Beach Diet. 

Find More Recipes Like This One:
Use Breakfast Recipes to find more recipes like this one.Use the Diet Type Index to find recipes suitable for a specific eating plan. You can also Follow Kalyn’s Kitchen on Pinterest to see all the good recipes I’m sharing there.

Historical Notes for this Recipe:
This recipe was first posted in 2010 when I had cherry tomatoes that were begging to be used. It was updated with greatly-improved photos in 2017 and was last updated with more information in 2021.

Pinterest image of Roasted Green Pepper and Tomato Breakfast Casserole with Feta

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    63 Comments on “Roasted Green Pepper and Tomato Breakfast Casserole with Feta”

  1. Pingback: Baked Mini-Frittatas with Mushrooms, Cottage Cheese, and Feta - Buy Acne Medications

  2. I didn't know that a veggie recipe could be so tasty! Thanks for sharing with us!

  3. This is one of the most nutrient-dense casserole I've seen! I will definitely give it a try! Can I use regular tomatoes?

    • Glad you like it. Cherry tomatoes are not quite so juicy, so if you use regular diced tomatoes I'd drain them in a colander while the peppers are roasting. Hope you enjoy!

  4. Call me stupid-I can't figure out where your Yummly button is?????

  5. This is a burst of flavors! Especially I love the combination of cheese and tomatoes always.

  6. Michael, so glad you enjoyed!

  7. This was excellent! I love how you can do all three steps in one pan…making the clean up super easy. I don't have spike seasoning so in place I use Trader Joe's Seasoning Salute. Delicious!

  8. Egg casseroles will last at least a week in the fridge. You can even cut them into serving-size pieces and keep in individual containers; then just pull one out and microwave each morning. Any type of low-fat cheese will work; I use low-fat grated mozzarella quite a bit.

  9. Hi
    Your SBD breakfast recipes look amazing! I just have a couple questions. I do shift work and I'm employed full time. If precooked the egg recipes, how long would the last in the refrigerator? My plan is to cut some up each time I'm working when I need breakfast. Also, I'm not a huge fan of feta, can you recommend any other cheese that may be nice in these recipes? thank you so much

  10. Thi was awesome! Because of dietary restrictions I switched the peppers for mushrooms and added Italian Sausage, was awesome, thanks so much for sharing

  11. If you click the link in the recipe it explains what Spike Seasoning is. If you don't find it, you can use any type of all-purpose seasoning, but I really like Spike.

  12. What is Spike seasoning? That's not something I have found in the spice aisle here in rural E TX. Is it something I can concoct myself? If not exactly what can I use to get the approximate flavor of it? This is on my list of bunch meals for next weekend. 🙂

  13. Thanks Kelsum, glad you like it.

  14. Love this Kalyn. I do something similar but not in casserole form but I can see how this would be so much better!

  15. Jana, Spike comes with and without added salt. I usually say "salt and fresh ground black pepper to taste" so people can decide how much salt they want.

  16. this looks tasty and simple. i would suggest leaving the salt out, though. spike seasoning already has salt in it. :o)

  17. I'm sorry I didn't see this recipe when peppers and tomatoes were at their peak in the garden. I've printed and will save it for this summer.

  18. Laura, hope you enjoy it.

    Anonymous, I would suggest eating more vegetables and less calorie dense foods like meat, nuts, and dairy products. I think the more vegetables you can eat the better. Soups with lots of veggies are good for winter.

  19. Kalyn, I am enjoying the daily recipes. I've lost 20 lbs due to the south beach way of life. I have about 30 more lbs to go. But, now that the weather has changed and salads are not so satisfying, I am having a hard time maintaining that weight loss. Due to this and the holidays, Ive gained 7 lbs and am very discouraged. Any suggestions?