Lemon Thyme Cookies

1/4 Pound butter
3/4 Cup sugar
1 Whole egg, beaten
1/2 Teaspoon vanilla
1 Tablespoon milk or cream
1 Teaspoon grated lemon zest
1/2 Cup fresh lemon thyme leaves, finely chopped
1 1/4 Cups flour
1/8 Teaspoon salt
1/4 Teaspoon baking powder

Preheat oven to 350F. Cream butter, gradually adding sugar, and beat until light. Add egg, vanilla, and milk and blend thoroughly. Blend in lemon zest and thyme. Mix flour, salt, and baking powder and sift into butter mixture. Blend well. Arrange by teaspoons on greased cookie sheet and bake 8-12 minutes, until lightly brown. Yield: 3 dozen .