2 tablespoons butter
2 tablespoons all-purpose flour
2 cups milk
1/2 teaspoon salt
1/4 teaspoon black pepper
1/4 teaspoon garlic powder
1/4 teaspoon dried oregano or Italian seasoning
1/4 cup grated cheese, optional
Melt butter in a pan over medium heat
Add flour and whisk continuously for 1 to 2 minutes
Slowly add milk while whisking to avoid lumps
Cook and whisk until the sauce thickens
Add salt, black pepper, garlic powder, and seasoning
Add cheese if using and stir until melted
Turn off the heat
Mix with cooked pasta immediately