This vegan potato casserole is inspired from the Spanish frittata but made with red lentils instead of eggs. It's a meal-prep-friendly dish with 22 grams of protein per serving.
Soak the red lentils in warm water while you prepare the filling.
For the potatoes
Peel and dice the onion. Peel the potatoes, cut them in half, and into ⅛" (3 mm) thick slices.
Heat a skillet with a generous amount of olive oil. Sauté the onion over medium-high heat for 2-3 minutes stirring often.
Add in the potatoes and cook over medium heat for 12 minutes, stirring regularly.
For the casserole
Preheat the oven to 400°F (200°C).
Drain and rinse the lentils. Add them to a high-speed blender with the coconut milk, chickpea flour, curry powder, garlic powder, salt, and pepper. Blend for 1-2 minutes until smooth.
Add the potatoes to a lightly greased casserole dish. Pour the lentil mixture on top. Give it a good mix to make sure everything is well combined and spread it out evenly.