How much onion powder would I use in place of one large chopped onion?

I need to know for a child that likes onion flavor, but not the texture.How much onion powder would I use in place of one large chopped onion?
Equivalents: 5 medium onions = 1 pound = 2 cups chopped = 3 cups sliced





1 small onion = 1/3 cup = 1 teaspoon onion powder = 1 tablespoon dried onion flakesHow much onion powder would I use in place of one large chopped onion?
1 teaspoon