Spicy Green Bean Casserole Ingredients 1 non‑stick cooking spray 29 Oz French style green beans, drained 10 1/2 Oz cream of mushroom soup 1/8 Tsp red cayenne pepper 3 Oz French fried onions 2 Tbsp shredded Parmesan cheese Heat oven to 450°F. Spray a 9 x 9‑inch baking dish with non‑stick cooking spray. Combine green beans, soup and red pepper in prepared baking dish. Evenly sprinkle French onions over green bean mixture. Sprinkle Parmesan cheese and loosely cover with foil. Bake on lower oven rack 10 minutes or until bubbly.