My whole family loves this hearty soup, especially on cool autumn evenings. It's rich and creamy with a mild onion-cheese flavor. When I need an easy dinner, I stir up this soup and serve it with warm crusty bread and a crisp salad.
-Janice Hemond, Lincoln, Rhode Island
In a large skillet, cook onions in 3 tablespoons butter over medium-low heat until tender. Add the broth, bouillon and pepper; bring to a boil. Remove from the heat.
In a large saucepan, melt the remaining butter. Stir in flour until smooth; gradually add milk. Bring to a boil; cook and stir for 1-2 minutes or until thickened. Reduce heat; add process cheese and onion mixture. Cook and stir until heated through and cheese is melted. Sprinkle with cheddar cheese and parsley.