Crab in a frittata feels fancy without being difficult. This high protein egg bake impresses brunch guests while you pretend it took more effort than it did.
Preheat your oven to 375°F. Meanwhile, whisk 8 large eggs with 1 cup whole milk in a large mixing bowl until fully combined.
Trim and cut asparagus into 1-inch pieces. Heat 1 tbsp olive oil in a 10-inch oven-safe skillet over medium heat, add asparagus and 2 chopped scallions, and sauté for 3–4 minutes until bright green but still crisp.
Add the lump crabmeat and half of the Gruyère cheese to the skillet. Gently stir to distribute evenly, cooking for another minute just to warm the crab.
Pour the egg mixture into the skillet, swirling gently to ensure even coverage. Sprinkle the remaining Gruyère cheese over the top. Season with 0.5 tsp kosher salt and 0.25 tsp black pepper.
Cook undisturbed over medium-low heat for about 3 minutes until the edges begin to set, then carefully transfer the skillet to the oven. Bake for 16–18 minutes until the center puffs and is set but still slightly creamy.
Remove from oven and let rest for 5 minutes before slicing into wedges. Serve warm for a perfect high protein brunch.