Mexican Fiesta Breakfast Casserole

Name: Mexican Fiesta Breakfast Casserole
Ingredients: nonstick cooking spray; 0.25 pound chorizo sausage; 1 cup warm water; 0.75 cup instant dry milk; 3 (6 inch) corn tortillas, cut into bite-size pieces; 2 cups beaten eggs; 1 (15 ounce) can pinto beans (such as Bush's®), rinsed and drained; 1 (10 ounce) can diced tomatoes and green chiles (such as RO*TEL®), drained; 1 cup frozen whole kernel corn; 0.5 cup chopped green chile pepper; 0.5 cup shredded pepper Jack cheese; 0.5 green bell pepper, chopped; 4 green onions, chopped; 2 tablespoons light sour cream, or to taste; 0.5 cup grated Mexican cheese blend