This Easy Spanish Tortilla Casserole brings all the comforting flavors of a classic Spanish tortilla into a simple, oven-baked dish. It’s perfect for busy weeknights or relaxed family meals, combining tender potatoes, eggs, and creamy richness in every bite.
Why You’ll Love This Recipe
This Easy Spanish Tortilla Casserole is incredibly satisfying with its soft, layered texture and rich flavor. It’s easy to prepare ahead, uses simple pantry ingredients, and is perfect for feeding a crowd. The oven-baked method makes it stress-free compared to traditional stovetop versions.
Ingredients

- 2 pounds Yukon Gold potatoes, peeled and thinly sliced
- 1 medium yellow onion, thinly sliced
- 2 1/2 tablespoons olive oil
- 1 teaspoon garlic powder
- 1 teaspoon kosher salt, divided
- 1/4 teaspoon black pepper
- 12 large eggs
- 1 cup sour cream
- 1 cup milk (whole or 2%)
- 3 cloves garlic, minced
- 2 tablespoons chopped chives
Instructions
- Preheat oven to 375°F and lightly grease a 9×13-inch baking dish with olive oil.
- In a large bowl, toss potatoes, onion, olive oil, garlic powder, 1/2 teaspoon salt, and pepper until evenly coated.
- Spread mixture evenly in the baking dish and bake for 20 minutes until nearly tender.
- In another bowl, whisk eggs until frothy, then mix in sour cream, milk, garlic, and remaining salt.
- Pour egg mixture over the potatoes evenly.
- Bake the Easy Spanish Tortilla Casserole for 35 minutes until golden and set.
- Cool slightly, garnish with chives, and serve warm or at room temperature.

Tips & Tricks
- Slice potatoes thinly for even cooking.
- Use a mandoline for consistent slices.
- Let the casserole rest before cutting to help it set.
- Add bell peppers or spinach for extra flavor and color.
Details
- Prep Time: 15 minutes
- Cook Time: 55 minutes
- Total Time: 1 hour 10 minutes
- Yield: 6–8 servings
- Category: Breakfast / Brunch
- Method: Baking
- Cuisine: Spanish-inspired
- Difficulty: Easy
- Dietary: Vegetarian, Halal-friendly

Notes
- Substitute Greek yogurt for sour cream if desired.
- Serve with a fresh salad or crusty bread.
- Great for meal prep and reheats well.
Nutrition (Approximate per serving)
- Calories: 320
- Protein: 14g
- Carbohydrates: 24g
- Fat: 18g
FAQ
Can I make this casserole ahead of time?
Yes, assemble it in advance and refrigerate before baking.
Can I freeze Easy Spanish Tortilla Casserole?
Yes, freeze in portions for up to 2 months.
What potatoes work best?
Yukon Gold are ideal for their creamy texture.
Can I add cheese?
Yes, shredded cheese adds extra richness.
How do I know it’s fully cooked?
A knife inserted in the center should come out clean.
Storage
- Refrigerate in an airtight container for up to 4 days
- Freeze for up to 2 months
- Reheat in oven or microwave until warmed through

Similar Recipes

Easy Spanish Tortilla Casserole
Ingredients
- 2 pounds Yukon Gold potatoes peeled and thinly sliced
- 1 medium yellow onion thinly sliced
- 2 1/2 tablespoons olive oil
- 1 teaspoon garlic powder
- 1 teaspoon kosher salt divided
- 1/4 teaspoon black pepper
- 12 large eggs
- 1 cup sour cream
- 1 cup milk whole or 2%
- 3 cloves garlic minced
- 2 tablespoons chopped chives
Instructions
- Preheat oven to 375°F and lightly grease a 9×13-inch baking dish with olive oil.
- In a large bowl, toss potatoes, onion, olive oil, garlic powder, 1/2 teaspoon salt, and pepper until evenly coated.
- Spread mixture evenly in the baking dish and bake for 20 minutes until nearly tender.
- In another bowl, whisk eggs until frothy, then mix in sour cream, milk, garlic, and remaining salt.
- Pour egg mixture over the potatoes evenly.
- Bake the Easy Spanish Tortilla Casserole for 35 minutes until golden and set.
- Cool slightly, garnish with chives, and serve warm or at room temperature.
Notes
- Substitute Greek yogurt for sour cream if desired.
- Serve with a fresh salad or crusty bread.
- Great for meal prep and reheats well.
Conclusion
This Easy Spanish Tortilla Casserole is a reliable, delicious dish that transforms simple ingredients into something truly special. Whether for breakfast, brunch, or dinner, it’s a recipe you’ll return to again and again.

