One-Pot Breakfast Casserole Muffins

Featured in: One-Pan Magic

These savory muffin cups blend eggs, cheese, and fresh vegetables like spinach, bell pepper, and onion, with optional cooked bacon or sausage. Mixed in a single bowl and baked in a muffin tin, they offer a simple, wholesome breakfast that's easy to prepare. Perfectly portable and ideal for meal prep, they can be enjoyed warm or cold, with variations for vegetarian or dairy-free preferences. Seasoned lightly with smoked paprika, salt, and pepper, these muffins provide a flavorful start to your morning with protein and vegetables in every bite.

Updated on Wed, 19 Nov 2025 10:00:00 GMT
Golden-brown One-Pot Breakfast Casserole Muffins, packed with cheese and savory vegetables, ready to eat. Pin Recipe
Golden-brown One-Pot Breakfast Casserole Muffins, packed with cheese and savory vegetables, ready to eat. | fordishes.com

Savory, portable breakfast muffins packed with eggs, cheese, and veggies are perfect for meal prep and taste delicious hot or cold. These easy one-pot breakfast casserole muffins are a budget-friendly way to start your day right.

I fell in love with these breakfast casserole muffins during a hectic work week—they kept me fueled and happy every morning. Preparing a batch on Sunday saved time and ensured I always had a tasty breakfast ready.

Ingredients

  • Eggs: 8 large
  • Whole milk or dairy-free alternative: 1/3 cup
  • Baby spinach, chopped: 1 cup
  • Red bell pepper, diced: 1/2 cup
  • Onion, finely chopped: 1/2 cup
  • Cooked bacon or breakfast sausage, crumbled (optional): 3/4 cup (omit for vegetarian)
  • Shredded cheddar cheese or Monterey Jack: 1 cup
  • Salt: 1/2 teaspoon
  • Black pepper: 1/4 teaspoon
  • Smoked paprika: 1/4 teaspoon
  • Olive oil or nonstick spray (for greasing): 1 tablespoon

Instructions

Preheat:
Preheat oven to 350°F (175°C). Grease a 12-cup muffin tin with olive oil or nonstick spray.
Mix Eggs and Milk:
In a large bowl, whisk together eggs and milk until fully combined.
Add Veggies, Protein, and Cheese:
Stir in spinach, bell pepper, onion, cooked bacon or sausage (if using), cheese, salt, black pepper, and smoked paprika.
Fill Muffin Tin:
Divide mixture evenly among the 12 muffin cups, filling each about 3/4 full.
Bake:
Bake for 22 to 25 minutes, or until muffins are set and lightly golden.
Cool and Serve:
Cool in the tin for 5 minutes, run a knife around the edges, and remove muffins. Serve warm or cool completely for storage.
Fluffy and cheesy One-Pot Breakfast Casserole Muffins, fresh from the oven, offering a delicious breakfast. Pin Recipe
Fluffy and cheesy One-Pot Breakfast Casserole Muffins, fresh from the oven, offering a delicious breakfast. | fordishes.com

My kids love helping mix the fillings, making this recipe a true family affair. We often personalize a few muffins for each person with their favorite veggies or cheese.

Required Tools

Use a 12-cup muffin tin, mixing bowl, whisk, knife, cutting board, and an oven for best results.

Allergen Information

Contains eggs and dairy. For dairy-free muffins, use plant-based alternatives and always check ingredient labels.

Nutritional Information

Each muffin (with bacon and cheddar) provides about 130 calories, 9 grams of fat, 2 grams of carbs, and 9 grams of protein.

These savory One-Pot Breakfast Casserole Muffins, featuring crumbled bacon and peppers, are perfect for meal prepping. Pin Recipe
These savory One-Pot Breakfast Casserole Muffins, featuring crumbled bacon and peppers, are perfect for meal prepping. | fordishes.com

Grab one of these muffins for a nutritious breakfast on the go or enjoy them cold for a quick snack. However you serve them, they'll brighten your morning!

Recipe FAQs

Can I make these muffins vegetarian?

Yes, simply omit the bacon or sausage and increase the amount of vegetables like mushrooms or zucchini to maintain flavor and texture.

How should I store these muffins?

Store in the refrigerator for up to 4 days or freeze them for up to 2 months. Reheat in the microwave or oven before serving.

Are there dairy-free options for these muffins?

Yes, substitute whole milk with plant-based alternatives and use dairy-free cheese to accommodate dietary needs.

What is the best way to prevent muffins from sticking to the tin?

Grease the muffin tin with olive oil or use a nonstick spray before filling the cups to ensure easy removal after baking.

Can I add fresh herbs to enhance flavor?

Absolutely, herbs like chives or parsley work well and add fresh, bright notes to the muffins.

One-Pot Breakfast Casserole Muffins

Savory muffins packed with eggs, cheese, spinach, and peppers for a convenient, tasty start to your day.

Prep Duration
15 mins
Cooking Duration
25 mins
Complete Time
40 mins
Recipe by Fordishes Ava Reynolds


Skill Level Easy

Cuisine American

Makes 12 Number of Servings

Diet Details Vegetarian Option, Gluten-Free, Low in Carbs

Ingredient List

Base

01 8 large eggs
02 1/3 cup whole milk or dairy-free alternative

Vegetables

01 1 cup chopped baby spinach
02 1/2 cup diced red bell pepper
03 1/2 cup finely chopped onion

Protein (optional)

01 3/4 cup cooked bacon or breakfast sausage crumbled

Cheese

01 1 cup shredded cheddar or Monterey Jack cheese

Seasonings

01 1/2 teaspoon salt
02 1/4 teaspoon black pepper
03 1/4 teaspoon smoked paprika

Oils

01 1 tablespoon olive oil or nonstick spray for greasing

Directions

Step 01

Preheat and prepare muffin tin: Preheat oven to 350°F (175°C). Grease a 12-cup muffin tin using olive oil or nonstick spray.

Step 02

Combine eggs and milk: Whisk together eggs and milk in a large bowl until fully blended.

Step 03

Incorporate vegetables, protein, cheese, and seasonings: Add chopped spinach, diced bell pepper, chopped onion, cooked bacon or sausage if using, shredded cheese, salt, black pepper, and smoked paprika to the egg mixture; stir gently to combine.

Step 04

Fill muffin cups: Evenly distribute the mixture among the 12 muffin cups, filling each approximately three-quarters full.

Step 05

Bake muffins: Bake for 22 to 25 minutes until muffins are set and lightly golden on top.

Step 06

Cool and serve: Allow muffins to cool in the tin for 5 minutes, then loosen edges with a knife and remove. Serve warm or cool completely before storing.

Needed Equipment

  • 12-cup muffin tin
  • Mixing bowl
  • Whisk
  • Knife and cutting board
  • Oven

Allergy Info

Double-check ingredients for allergens and speak with a healthcare provider if you're unsure.
  • Contains eggs, milk, and cheese
  • May contain pork if bacon or sausage is used
  • Dairy-free adaptations require plant-based milk and cheese alternatives

Nutrition Information (per serving)

For informational use only—doesn't replace personalized medical direction.
  • Calories: 130
  • Fats: 9 g
  • Carbohydrates: 2 g
  • Proteins: 9 g