How to Make Delicious Tortilla Española

Tortilla Española.

You can have Tortilla Española using 9 ingredients and 5 steps. Here is how you cook that.

Ingredients of Tortilla Española

1. Prepare 1 lb of zucchini (about 2 medium), cut into 1/8" thick slices.
2. It's 2 teaspoons of coarse salt.
3. It's 1 1/4 cups of extra virgin olive oil.
4. Prepare 2 lbs of Yukon Gold potatoes (about 6), scrubbed & sliced 1/8" thick.
5. It's 1 of large Spanish onion, sliced 1/8" thick.
6. You need 10 of large eggs.
7. It's 1 cup of finely grated Parmigiano-Reggiano cheese.
8. You need 1 cup of fresh basil leaves, chopped.
9. Prepare of Romesco sauce for serving (optional).

Tortilla Española instructions

1. In a colander set over a bowl, toss zucchini with salt. Let drain for 30 minutes, pressing on the zucchini a few times to remove excess moisture..
2. Meanwhile, heat 1 cup of oil in a 12" ovenproof skillet (preferably cast-iron) over high. Add potatoes and onion; reduce heat to low. Cook, stirring occasionally and scraping up browned bits from bottom of pan, until potatoes are tender but not taking on any color 30-35 minutes..
3. Add zucchini; cook, stirring occasionally, until tender, 12-15 minutes. Transfer mixture to colander; let drain 5 minutes, gently stirring occasionally. In a large bowl, whisk together eggs, cheese and basil; then stir in potato mixture..
4. Preheat oven to 425°F. Wipe skillet clean, making sure to remove any browned bits. Heat remaining 1/4 cup oil in skillet over high until shimmering. Add egg mixture and reduce heat to low. Cook, running a flexible spatula around sides occasionally to prevent eggs from sticking, until edges begin to set, about 10 minutes..
5. Transfer skillet to oven. Bake until center is set and edges are golden brown, about 12 minutes. Let cool 5 minutes. Run a knife around edges to loosen, then invert onto a wire rack. Using a large spatula, flip tortilla back over; let cool completely. To serve, cut tortilla into wedges and top with romesco sauce..