01 -
Preheat oven to 400°F (200°C).
02 -
Heat olive oil in a 9-inch cast iron skillet over medium-high heat. Add the chopped onion and cook until slightly golden brown. Add chopped red bell pepper and cook for another 3-5 minutes.
03 -
Add the diced roasted sweet potato and spinach to the skillet. Stir well to combine and cook for 1 minute until the spinach starts to wilt.
04 -
In a medium bowl, whisk together the eggs, almond milk, crushed red pepper flakes, dried parsley, salt, and pepper until well combined.
05 -
Pour the egg mixture into the skillet over the vegetables, making sure the eggs cover all the vegetable mixture. Cook on the stovetop until the edges of the frittata begin to set.
06 -
Transfer the skillet to the preheated oven and bake for 10-15 minutes, or until the frittata is completely cooked through but not overbaked.
07 -
Once cooled, divide the frittata into four portions and place each portion in a glass meal prep container. Add berries alongside the frittata. Store in the refrigerator for up to 4 days. Add roasted cashews when ready to eat.