Adapted from Sandy's Homemade Broccoli and Cheddar Soup
by Christine, happyvballgirl @MyEpicureanAdventures
Melt butter in large pot/dutch oven over medium-high heat.
Add onion and saute until translucent, about 3-4 minutes.
Whisk in flour and continue to stir until mixture turns golden brown, about 5 minutes.
Very slowly add chicken broth, whisking vigorously to avoid flour chunks until smooth and all broth is added.
Add milk, celery power and salt and pepper.
Reduce heat to medium-low and simmer until mixture is thickened, about 10 minutes.
Add broccoli and carrots and simmer until vegetables are tender, about 30 minutes.
Reduce heat to low. Add cheddar cheese and stir until cheese melts.
Enjoy!