PREHEAT oven to 350°F. Brown chorizo in large skillet on medium heat; drain. Add onions, garlic and adobo seasoning; mix well. Cook and stir until onions are tender. Stir in the picante sauce; simmer 5 min.
BEAT eggs lightly in medium bowl. Add sour cream and flour; mix well. Stir in the cheese. Layer half each of the chiles, sausage mixture and egg mixture in greased 8-inch square baking dish. Repeat layers.
BAKE 35 min. or until center is set.