This Slow Cooker Mexican Egg Casserole is simple to assemble, vegetarian and gluten-free. It’s perfect for busy weekday mornings or a relaxed weekend brunch.

Slow Cooker Mexican Egg Casserole

Start your day with a flavorful, easy-to-make Slow Cooker Mexican Egg Casserole. This recipe brings together spicy soyrizo (or traditional chorizo), fresh vegetables, eggs and cheese in a hands-off slow cooker method. It’s vegetarian-friendly when made with a plant-based soyrizo and naturally gluten-free, making it a great option for a variety of diets. It reheats well, freezes nicely in portions, and doubles as a filling for breakfast burritos.

This casserole is ideal for meal prep: assemble the night before, refrigerate, then turn the slow cooker on in the morning for a warm, ready-to-serve breakfast or brunch. Serve topped with salsa, sour cream, avocado and fresh cilantro, or wrap portions in tortillas for quick breakfast burritos.

Recipe Overview

• Servings: 6
• Prep time: 15 minutes
• Cook time: 2–3 hours on high or 4–6 hours on low
• Dietary: Vegetarian option (use soyrizo), Gluten free

Ingredients

• 1 tbsp olive oil
• ½ cup diced onion
• ½ cup diced green bell pepper
• 4 cloves garlic, minced
• 12 oz soyrizo (or chorizo)
• 12 eggs, whisked
• ½ cup milk
• ½ tsp salt
• 1 tsp black pepper
• 1 tbsp dried oregano
• 2 tomatoes, diced
• ½ cup pickled or fresh jalapeños, sliced
• 1 cup shredded spicy cheddar cheese

Optional Toppings

• 1 cup salsa
• ¼ cup sour cream
• 1 avocado, diced
• ¼ cup fresh cilantro, chopped

Instructions

1. Heat the olive oil in a large skillet over medium-high heat.
2. Add the diced onion and green bell pepper and sauté for 4–5 minutes, until softened. Add the minced garlic and sauté another minute until fragrant.
3. Add the soyrizo (or chorizo) to the skillet and cook for 6–8 minutes, breaking it up until browned and cooked through. If using plant-based soyrizo, follow package directions for browning.
4. In the slow cooker, combine the whisked eggs, milk, salt, black pepper and oregano. Whisk to blend completely.
5. Stir the cooked soyrizo into the egg mixture in the slow cooker.
6. Add the diced tomatoes and sliced jalapeños, then gently mix to distribute ingredients evenly.
7. Sprinkle the shredded spicy cheddar cheese over the top.
8. Cover and cook on low for 4–6 hours or on high for 2–3 hours, until eggs are set and a knife inserted near the center comes out clean.
9. Let the casserole rest for a few minutes before slicing. Serve warm with desired toppings.

Serving Suggestions and Variations

This casserole makes a terrific base for breakfast burritos: warm slices, add avocado, sour cream and hot sauce, then wrap in a tortilla. For a lighter version, use reduced-fat cheese and substitute half-and-half or a milk alternative for the milk. Swap in your favorite peppers, add cooked black beans for extra fiber and protein, or fold in a handful of fresh spinach for extra greens. If you prefer less heat, reduce or omit the jalapeños.

Make-Ahead, Storage & Reheating

For busy mornings, assemble the ingredients in the slow cooker insert the night before and refrigerate. When ready, set the slow cooker to cook on high in the morning. Leftovers keep well in an airtight container in the refrigerator for up to 4 days. Reheat individual portions in the microwave for 60–90 seconds or until heated through, or warm in a 350°F (175°C) oven until hot. This casserole also freezes well in portions—wrap or place in freezer-safe containers for up to 2–3 months; thaw overnight in the refrigerator before reheating.

Tips for Best Results

• Brown the soyrizo or chorizo well to develop flavor before adding to the egg mixture.
• Avoid overcooking: check the casserole near the lower end of the suggested time to prevent dryness.
• If your slow cooker runs hot, use the low setting and extend time rather than high to keep eggs tender.
• To make individual servings, bake the mixture in a greased muffin tin at 350°F (175°C) for 18–22 minutes.

Nutrition Facts (per serving)

• Calories: 476 kcal
• Carbohydrates: 20 g
• Protein: 28 g
• Fat: 33 g (Saturated Fat: 10 g)
• Cholesterol: 354 mg
• Sodium: 1372 mg
• Fiber: 6 g
• Sugar: 6 g
• Vitamin A: 2375 IU (approx.)
• Vitamin C: 30.4 mg

This Slow Cooker Mexican Egg Casserole is a delicious, hands-off way to bring spice and convenience to breakfast and brunch. It’s flexible, easy to customize, and a dependable recipe to serve family and guests. Enjoy warm with your favorite toppings, or use leftovers for quick, satisfying breakfast burritos throughout the week.

Author: Whitney Bond