Tortilla Española (Spanish Tortilla)

Name: Tortilla Española (Spanish Tortilla)
Prep time: 35 min
Cook time: 45 min
Total time: 1 h 20 min
Cuisine: Spanish
Ingredients: 0.5 cup olive oil; 2 pounds baking potatoes, peeled and cut into 1/4-inch slices; salt and pepper to taste; 2 tablespoons olive oil; 2 onions, sliced into rings; 6 large eggs; 1 roasted red pepper, drained and cut into strips; 3 ounces Spanish serrano ham, chopped; 2 tablespoons chopped fresh Italian parsley