In a large bowl, mix together butter, sugar, eggs, Greek yogurt, vanilla extract, and Lemon Vitality EO.
Then start adding flour mixture into the butter mixture a 1/2 cup at a time until it's all combined and the batter is smooth.
Spray bundt pan with cooking spray, then add batter evenly in pan. (Note: drop the pan on the counter to release any air bubbles in the batter.)
Bake in the oven for 35 minutes. Test cake with toothpick, once the cake is cooked, let cool on a rack.
Make the glaze by combining lemon juice, sugar and lemon zest in a small saucepan. Cook until sugar is dissolved. Let mixture come to a low boil.