Brocoli Chicken Bake

2 Large Brocoli Clusters
2 Chicken Breasts
2 Large Onions
2-3 Cloves of Garlic
1/4-1/2 Kilo Grated Cheese (Emek is awesome)
Few Sprigs of Rosemary

Cut brocoli and chicken into chunks and put aside in large baking pan. Saute chopped onions, garlic, & rosemary in butter until golden. Add milk and heat until hot, then slowly add mixture of cold milk and flour. When entire mixture is hot and thickened, add 1/2 of the grated cheese. Pour mixture over brocoli and chicken. Top with the remaining cheese and bake.