Baked tortilla sausage casserole is a simple layered dinner made with tortillas, smoked sausage, tomatoes, and a creamy cheesy egg custard. It bakes into a golden, sliceable dish that works for a busy weeknight or a relaxed weekend brunch.
Why You Will Love This Casserole
- Simple ingredients you likely already have on hand.
- Minimal prep, with most of the work done in one baking dish.
- Soft tortillas soak up the egg mixture while the edges turn golden.
- Easy to scale up for a crowd or cut into portions for leftovers.
Ingredients
- 6 small flour tortillas (about 8 inches / 20 cm each)
- 12 oz (340 g) smoked sausage, sliced into rounds
- 2 medium tomatoes, diced (about 1 cup / 150 g)
- 6 large eggs
- 1 cup (240 ml) milk
- 1 1/2 cups (150 g) shredded cheddar cheese, divided
- 1/2 tsp (3 g) salt
- 1/4 tsp (0.5 g) black pepper
- 1/2 tsp (1 g) garlic powder
- Cooking spray or 1 tbsp (15 ml) oil for greasing the dish
Quantities are estimates for a 9 by 13 inch (23 by 33 cm) baking dish, which serves about 6.
Ingredient Notes
Smoked sausage adds savory flavor and browns well, so you can skip extra seasoning in the sausage itself. Tomatoes release juice as they bake, so drain them well or pat them dry to prevent a soggy center. Cheddar melts smoothly and gives the casserole its classic flavor, though any shredded melting cheese works.
Equipment You Will Need
- 9 by 13 inch (23 by 33 cm) baking dish
- Large skillet
- Mixing bowl and whisk
- Cutting board and knife
- Measuring cups and spoons
How to Make Baked Tortilla Sausage Casserole
- Preheat the oven to 350°F (175°C). Grease the baking dish lightly with cooking spray or oil.
- Heat the skillet over medium heat. Add the sliced sausage and cook for about 5 to 7 minutes, stirring occasionally, until the edges are browned. Transfer to a plate and let it cool slightly.
- Cut the tortillas into quarters or strips. This makes them easier to layer and helps each bite hold together.
- Spread a single layer of tortilla pieces across the bottom of the dish, overlapping slightly.
- Scatter half of the sausage over the tortillas, then add half of the diced tomatoes and about 3/4 cup (75 g) of the cheese.
- Repeat with a second layer of tortillas, the remaining sausage, the remaining tomatoes, and the rest of the cheese except a small handful for the top.
- In a bowl, whisk the eggs, milk, salt, pepper, and garlic powder until smooth and fully combined, with no streaks of egg white.
- Pour the egg mixture evenly over the layers. Gently press the tortillas down so they absorb some of the liquid.
- Bake for about 25 to 30 minutes, until the eggs are set in the center and the top is golden. A knife inserted in the center should come out clean. The internal temperature should reach 160°F (71°C).
- Let the casserole rest for 5 to 10 minutes before cutting. This helps the layers hold together when served.
Pro Tips for the Best Results
- Cook the sausage first so it releases some fat and browns, which adds more flavor than adding it raw.
- Pat the tomatoes dry with a paper towel to keep the casserole from becoming watery.
- Whisk the eggs well so the custard is even and does not bake in streaks.
- If the top browns too quickly, loosely cover the dish with foil for the last few minutes of baking.
- Use a 9 by 13 inch dish for a shallower casserole, or a smaller dish for thicker slices and a longer bake.
Common Mistakes to Avoid
- Skipping the drain step for tomatoes can leave a watery bottom layer.
- Pulling the casserole out too early can leave the center loose. Check that it is set before removing it.
- Cutting it right away can cause the squares to fall apart. Let it rest first.
- Overbaking can make the eggs rubbery, so start checking at the lower end of the time range.
Variations and Substitutions
- Swap smoked sausage for cooked breakfast sausage or chorizo, adjusting the seasoning to taste.
- Add diced bell pepper or sliced green onions for extra color and crunch.
- Use pepper jack or Monterey Jack cheese for a milder, creamier flavor.
- Replace the milk with half-and-half for a richer custard.
- Add a can of drained diced green chiles for a little heat.
Serving Suggestions
Serve the casserole warm with sour cream, salsa, sliced avocado, or chopped cilantro. A simple green salad or fresh fruit makes a light side for dinner, and it fits well on a brunch table with coffee or orange juice.
Storage and Reheating
Cover leftovers and refrigerate them within two hours of baking. Store the casserole in an airtight container and use within 3 to 4 days. Reheat individual portions in the microwave or in a 350°F (175°C) oven until hot throughout. Freezing is possible, but the tortillas may soften, so expect a slightly different texture after thawing.
Frequently Asked Questions
Can I make this casserole ahead of time?
Yes. Assemble the layers and pour the egg mixture into the dish, then cover and refrigerate for up to a day. Add about 5 to 10 minutes to the baking time, since the dish will start out cold.
Why did my casserole turn out watery?
Tomatoes release juice during baking. Drain or pat them dry, and make sure the sausage is not greasy before layering.
Can I use corn tortillas instead of flour?
You can, but corn tortillas are firmer and may need to be softened briefly in a warm skillet or microwave first so they bend and layer neatly.
How do I know when the casserole is done?
The center should be set and not jiggle when the dish is gently shaken, the top should be golden, and a knife inserted in the center should come out clean.
What is your favorite easy dinner to make on a busy night?
