Preheat oven to 375°F (190°C).
In a medium bowl, combine black beans, corn, diced red bell pepper, diced red onion, and baby spinach.
Season the vegetable mixture with cumin, garlic powder, sea salt, and black pepper.
Cut the corn tortilla into bite-sized strips or triangles.
In a small baking dish, spread a spoonful of enchilada sauce on the bottom.
Layer half of the tortilla strips, followed by the vegetable mixture, and another layer of tortilla strips.
Pour the remaining enchilada sauce over the top and sprinkle with shredded sharp cheddar cheese.
Bake for 20-25 minutes until the sauce is bubbling and the cheese has melted into a golden crust.
While baking, whisk the Greek yogurt with lime juice to create a high-protein crema.
Remove from oven, top with a generous dollop of the lime-yogurt crema and fresh cilantro before serving.