Make this recipe a recipe that people in that category can eat. categories: ['vegetarian'], recipe: in large saucepan, cook onions in butter until soft. add potatoes, chicken broth, parsley, thyme, celery seed, salt, and pepper to saucepan. simmer for 15 minutes. add milk to saucepan. puree half of soup and flour in blender. return to saucepan. heat through.

Target recipe: melt butter in saucepan over low heat. blend in flour, salt and pepper. add milk all at once. cook quickly, stirring constantly, till the mixture thickens and bubbles. remove sauce from heat when it bubbles. add potatoes to the sauce. heat through. season to taste.