1) Preheat oven to 350°F. Butter and flour Bundt pan; set aside. Whisk baking powder, salt, and 3 cups flour in a medium bowl. Combine sugar and lemon zest in a large bowl; using your fingertips, rub together until lemon sugar is well blended.
2) Add 1 cup butter to lemon sugar. Using an electric mixer on high speed, beat until mixture is light and fluffy, about 4 minutes. Add eggs one at a time, beating to blend between additions and occasionally scraping down sides and bottom of bowl with a rubber spatula, until mixture is light and very fluffy, about 4 minutes longer.
3) Reduce speed to low. Add dry ingredients in 3 additions, alternating with buttermilk in 2 additions, beginning and ending with dry ingredients. Scrape batter into prepared pan; smooth top.
4) Bake cake until golden brown and beginning to pull away from sides of pan, 60-70 minutes. Transfer to a wire rack and let cake cool in pan for 10 minutes. Invert cake onto rack; remove pan and let cool completely. DO AHEAD: Cake can be made 2 days ahead. Store airtight at room temperature.
5) Combine preserves and lemon juice in a small saucepan. Bring to a boil, reduce heat, and simmer, stirring occasionally, until glaze is reduced to 1/2 cup, 6-8 minutes. Strain glaze into a small pitcher or bowl; discard solids in strainer. Pour glaze over cooled cake and let sit for at least 10 minutes.
Find any recipe, add your own, make grocery lists easily from recipes. Enter any 3 ingredients and BigOven will tell you what you can make. It's free! (4.5/5 stars)