Preheat your oven's broiler to high and position the rack about 6 inches from the heat source.
In a large bowl, whisk together eggs, almond milk, garlic powder, salt, and pepper until well combined and slightly frothy.
Heat olive oil in a 10-inch oven-safe skillet over medium heat, then add the steamed broccoli and sauté for 2 minutes.
Pour the egg mixture over the broccoli and sprinkle evenly with cheddar cheese, then cook without stirring for 6-8 minutes until the edges are set but the center is still slightly jiggly.
Sprinkle Parmesan cheese on top and transfer the skillet to the oven, broiling for 3-4 minutes until the top is golden brown and the center is fully set.
Remove from oven, let cool for 5 minutes, then slice into wedges and serve warm.