One-Pot Breakfast Muffins

Featured in: One-Pot Warm Meals

These one-pot breakfast muffins blend eggs, cheese, spinach, bell pepper, and optional bacon or sausage into a savory, portable meal. Prepared easily in a muffin tin, they bake to a golden finish, perfect for hot or cold enjoyment. Ideal for busy mornings, meal prep, or on-the-go snacking, these muffins offer flexibility with vegetarian options and can be stored refrigerated or frozen. Seasoned with smoked paprika and black pepper, they deliver balanced flavor alongside nutritious ingredients.

Updated on Wed, 19 Nov 2025 14:37:00 GMT
Golden-brown One-Pot Breakfast Casserole Muffins, filled with cheese and veggies, perfect for a hearty breakfast. Save to Pinterest
Golden-brown One-Pot Breakfast Casserole Muffins, filled with cheese and veggies, perfect for a hearty breakfast. | frostkettle.com

Savory, portable breakfast muffins packed with eggs, cheese, and veggies are perfect for any busy morning. These one-pot breakfast casserole muffins come together quickly, save time and money, and taste delicious whether enjoyed hot or cold.

I first started making these breakfast muffins to streamline hectic mornings and reduce food waste by using up leftover veggies and cheese. They quickly became a favorite in our family due to their simplicity and delicious flavor.

Ingredients

  • Base: 8 large eggs, 1/3 cup whole milk (or dairy-free alternative)
  • Vegetables: 1 cup baby spinach, chopped, 1/2 cup red bell pepper, diced, 1/2 cup onion, finely chopped
  • Protein (optional): 3/4 cup cooked bacon or breakfast sausage, crumbled (omit for vegetarian)
  • Cheese: 1 cup shredded cheddar cheese (or Monterey Jack)
  • Seasonings: 1/2 teaspoon salt, 1/4 teaspoon black pepper, 1/4 teaspoon smoked paprika
  • Oils: 1 tablespoon olive oil or nonstick spray (for greasing muffin tin)

Instructions

Prep the Pan:
Preheat oven to 350°F (175°C). Grease a 12-cup muffin tin with olive oil or nonstick spray.
Whisk Eggs and Milk:
In a large bowl, whisk together eggs and milk until fully combined.
Add Fillings:
Stir in spinach, bell pepper, onion, cooked bacon or sausage (if using), cheese, salt, black pepper, and smoked paprika.
Fill Muffin Tin:
Divide the mixture evenly among the 12 muffin cups, filling each about 3/4 full.
Bake:
Bake for 22–25 minutes, or until muffins are set and lightly golden.
Cool and Serve:
Cool in the tin for 5 minutes, then run a knife around the edges and remove muffins. Serve warm or allow to cool completely for storage.
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| frostkettle.com

My kids love grabbing one of these muffins on busy school mornings before heading out the door. It's become a comfort food tradition in our home.

Required Tools

You only need a 12-cup muffin tin, mixing bowl, whisk, knife, cutting board, and oven to prepare this simple breakfast.

Allergen Information

Contains eggs and dairy. For dairy-free: use plant-based milk and cheese. May include pork if bacon or sausage is used. Always check labels for processed items.

Nutritional Information

Each muffin (with bacon and cheddar) has approximately: 130 calories, 9 g fat, 2 g carbs, and 9 g protein.

Steaming hot, fluffy One-Pot Breakfast Casserole Muffins filled with savory bacon and cheddar cheese. Save to Pinterest
Steaming hot, fluffy One-Pot Breakfast Casserole Muffins filled with savory bacon and cheddar cheese. | frostkettle.com

Make a batch of these muffins for grab-and-go breakfasts throughout the week. Enjoy warm or cold for a convenient start to your day.

Recipe Questions & Answers

Can I make these muffins vegetarian?

Yes, simply omit the bacon or sausage and add extra vegetables like mushrooms or zucchini for added flavor and texture.

How should I store the muffins?

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

What alternatives exist for dairy ingredients?

Use plant-based milk and cheese substitutes to make these muffins dairy-free while maintaining savory taste.

Can I prepare these muffins ahead of time?

Absolutely, these muffins are great for meal prep and can be baked in advance to enjoy throughout the week.

What type of muffin tin is recommended?

A 12-cup muffin tin works best to ensure even baking and proper portion size.

Are there tips for enhancing flavor?

Adding fresh herbs like chives or parsley can elevate the flavor and freshness of the muffins.

One-Pot Breakfast Muffins

Portable muffins packed with eggs, cheese, and veggies; great for quick and tasty morning meals.

Prep Duration
15 minutes
Time to Cook
25 minutes
Overall Time
40 minutes
Created by Nora Whitman


Skill Level Easy

Cuisine American

Makes 12 Serving Size

Dietary Information Meatless, Wheat-Free, Reduced-Carb

What You Need

Base

01 8 large eggs
02 80 ml whole milk or dairy-free alternative

Vegetables

01 30 g baby spinach, chopped
02 75 g red bell pepper, diced
03 80 g onion, finely chopped

Protein (optional)

01 85 g cooked bacon or breakfast sausage, crumbled

Cheese

01 115 g shredded cheddar or Monterey Jack cheese

Seasonings

01 0.5 teaspoon salt
02 0.25 teaspoon black pepper
03 0.25 teaspoon smoked paprika

Oils

01 1 tablespoon olive oil or nonstick spray for greasing

How-To Steps

Step 01

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

Step 02

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

Step 03

Incorporate Vegetables and Protein: Stir in chopped spinach, diced bell pepper, finely chopped onion, cooked bacon or sausage if using, shredded cheese, salt, pepper, and smoked paprika.

Step 04

Fill Muffin Cups: Distribute mixture evenly among the 12 muffin cups, filling each approximately three quarters full.

Step 05

Bake: 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 pan for 5 minutes. Run a knife around edges to loosen and remove. Serve warm or cool completely for storage.

Tools You'll Need

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

Allergy Info

Review every ingredient for allergens. Ask a healthcare professional if unsure.
  • Contains eggs, milk, and cheese allergens.
  • May contain pork if using bacon or sausage.

Nutrition Details (Each Serving)

Given for informational purposes, this isn't medical advice.
  • Energy Value: 130
  • Fats: 9 g
  • Carbohydrates: 2 g
  • Proteins: 9 g