Step 1

Heat a large pot over medium-high heat. Coat pot with cooking spray. Add onion and garlic to pan; sauté 5 minutes, stirring occasionally.

Step 2

Reduce heat to medium; add butter, stirring until butter melts. Sprinkle onion mixture with flour; cook 2 minutes, stirring occasionally.

Step 3

Gradually add milk and broth, stirring constantly with a whisk; bring to a boil. Reduce heat to medium-low; cook 10 minutes or until slightly thick, stirring constantly. Add cheese and stir until cheese melts. Add broccoli, chicken, half-and-half, salt and pepper; cook 10 minutes or until broccoli is tender and soup is thoroughly heated.