I love to use this bag of broccoli from Costco. It's only about $5 and lasts for awhile. All you need to do to use it is defrost in cold water in a ziplock for about 20 minutes before you use it.
Panera Broccoli Cheese Soup
1 tablespoon butter, melted
1/2 medium onion, chopped (I use dried onion)
1/4 cup melted butter
1/4 cup flour
2 cups half and half
2 cups chicken stock or chicken broth
1/2 pound broccoli
1 cup carrots
1/4 teaspoon nutmeg
salt and pepper
8 ounces cheddar cheese
Saute onion in butter, set aside
Cook melted butter and flour using whisk for 3-5 minutes. Slowly add half and half. Add chicken broth whisking continuously. Simmer for 20 minutes.
Add broccoli, carrots and onions and cook until veggies are tender, 20-25 minutes.
Pour into blender and puree (or keep it chunky...my husband likes it better like that!)
Return to pot, add cheese and heat until melted.