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Instructions
Preheat the oven to 375 degrees F (190 degrees C). Lightly grease a 9x13-inch baking dish.
Meanwhile, cook sausage in a large, deep skillet over medium-high heat until evenly browned. Drain, then crumble. Transfer sausage to the prepared baking dish; top with Cheddar cheese, Monterey Jack cheese, onion, green chile peppers, and jalapeño pepper.
Whisk eggs, chili powder, cumin, salt, garlic powder, and black pepper in a medium bowl; pour over sausage-cheese mixture in the baking dish.
Bake in the preheated oven until a knife inserted into center comes out clean, 18 to 22 minutes. Cool for 10 minutes, then cut into squares.