Bistro Mac & Cheese

This is the best homemade mac and cheese I've found so far. It's definitely a keeper.

1 package pasta (I used penne)
3 tbsp butter
3 tbsp flour
2 1/2c milk
1 tsp salt
1/2 tsp pepper
1/4 tsp garlic powder
1 1/4c shredded cheddar
1 1/4c shredded mozzarella
3oz. cream cheese
1/2c sour cream

Cook pasta. Melt butter and stir in flour until smooth. Gradually stir in milk and seasonings. Bring to boil and cook 2 min or until thickened. Keep stirring.

Reduce heat. Add cheeses and stir until melted. Add sour cream. Add pasta and mix. Enjoy the creamy goodness!