1-First, preheat your oven to 350°F (175°C) and grease a 9×5-inch loaf pan to avoid any sticking issues. In a large bowl, mix the sugar, eggs, sour cream, lemon zest, lemon juice, vanilla extract, and canola oil until everything is smooth and combined.

2-Next, sift the dry ingredients all-purpose flour, baking powder, and salt then gently fold them into the wet mixture. Don’t overmix; you want the batter to stay light. For the creamiest swirl, beat the softened cream cheese with powdered sugar until smooth.

3-Now, spread half the batter in the prepared pan, then add half the cream cheese mixture on top and swirl it gently with a knife. Repeat with the remaining batter and cream cheese for that pretty marble look. Bake for 65 to 70 minutes, covering with foil during the last 20 to 30 minutes to keep it from browning too much. Let it cool completely before slicing so the swirl sets properly this bread yields one perfect loaf.