Gradually add brown sugar mixture and then vanilla, beating until thick.
Gradually add the brown sugar, beating until it is completely incorporated, 2 to 3 minutes.
Beat butter at medium speed with an electric mixer until creamy;
gradually add brown sugar, beating well.
Gradually add the brown sugar, and cream together until light ant fluffy.
While continuing to beat,
gradually add brown sugar and granulated sugar; beat until well combined.
Not exact matches
So I have
gradually started reducing the amount of turbinado and
adding brown sugar in place of the tubinado.
Gradually add brown and white
sugar and beat until incorporated.
Gradually add the remaining 1/2 cup
brown sugar, beating until stiff peaks form.
Add brown and white
sugars gradually until the butter mixture is fluffy.
Sift icing
sugar and
add gradually brown sugar mixture, beating after each addition.