Smoked Salmon and Potato Frittata | America's Test Kitchen

Ingredients

• 4 ounces cream cheese , cut into ½-inch pieces, divided
• ¼ cup water
• 10 large eggs
• 3/8 teaspoon table salt , divided
• ½ red onion , sliced thin
• 2 tablespoons lemon juice
• 1/4 cup extra-virgin olive oil , divided
• 2 cups frozen diced hash brown potatoes
• 4 ounces smoked salmon , chopped
• 2½ teaspoon everything bagel seasoning
• 2 plum tomatoes , cored, halved lengthwise, and sliced crosswise ¼ inch thick
• ½ cup coarsely chopped fresh dill