Preheat the oven to 325°F. Prepare the bundt pan: spray with a non-stick baking spray and sprinkle flour throughout the pan. Shake to coat, and discard any excess flour. See recipe notes for my other favorite way to grease a bundt pan.
In the bowl of a stand mixer fitted with a paddle attachement, cream the softened butter, shortening, and sugar on medium speed for 5-7 minutes or until butter becomes noticeably lighter in color and fluffy.
1 cup unsalted butter, softened , 1/2 cup shortening, room temperature , 3 cups granulated sugar
Meanwhile, sift together the flour, baking powder and salt. Set aside.
3 cups all-purpose flour, spooned and leveled, 1/2 tsp. baking powder, 1 1/4 tsp. kosher salt
Decrease mixture to low and beat in the eggs, one at a time. Beat each egg just long enough for the yellow to disappear (about 30 seconds). Add in the lemon juice, lemon zest and lemon extract. (and vanilla, if using).
6 large eggs, room temperature , 1 1/2 Tbsp. lemon zest, 1 Tbsp. lemon extract, 2 Tbsp. fresh lemon juice
Gradually add the flour mixture alternately with the heavy cream or milk, beginning and ending with the flour mixture. Beat just until combined after each addition.
1 cup heavy cream, room temperature (or whole milk)
Spoon batter into prepared bundt pan. Gently tap the pan 3-5 times on a work surface to release any air bubbles that may have developed. This will also insure that the batter fills every crevice of the pan.
Bake for ~65-70 minutes or until a toothpick inserted near the center comes out clean. Cool for 10-15 minutes before inverting onto a wire rack. (Note: place a piece of parchment paper underneath for easy clean-up).
Make the lemon syrup: in a microwave safe bowl, combine the powdered sugar and lemon juice. Stir to combine and microwave for 1 minute. Allow to cool for a few minutes, it will thicken a little as it cools. Poke holes all around the cake with a fork or toothpick and brush the syrup over the cake, letting it soak into the holes.
1/2 cup powdered sugar , 1/4 cup fresh lemon juice
Once cake is cooled, mix the ingredients together for the glaze and spoon it over the cake, allowing it to drip down the sides. Garnish with lemon zest, if preffered. Slice and enjoy!
1 cup powdered sugar, 2 Tbsp. lemon juice, 1 Tbsp. heavy cream