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Allow butter, eggs, and yogurt to stand at room temperature 30 minutes.
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Combine flour, baking powder, and baking soda; set aside.
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Beat butter on medium-high speed 30 seconds.
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Add sugar and beat 10 minutes or until very light and fluffy.
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Beat in vanilla.
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Add eggs, one at a time, and beat 1 minute after each addition.
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Add dry mixture and yogurt alternately to beaten mixture, beating each addition until just combined.
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Pour batter into greased loaf pan.
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Bake at 325 degrees for 60-75 minutes or until a wooden toothpick inserted in center comes out clean.
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Cool on a wire rack 10 minutes; remove from pan and cool completely.