01 - Combine strawberries, sugar, and lemon juice in a small saucepan. Cook over medium heat for 5-7 minutes, stirring occasionally, until strawberries release juice and mixture thickens slightly. Remove from heat.
02 - Beat softened cream cheese, sugar, egg yolk, and vanilla extract in a small bowl until smooth and creamy. Set aside.
03 - Whisk together flour, sugar, baking powder, baking soda, and salt in a large bowl.
04 - Whisk buttermilk, eggs, melted butter, and vanilla in a separate bowl.
05 - Pour wet ingredients into dry ingredients and gently stir until just combined. Do not overmix; a few lumps are acceptable.
06 - Heat a nonstick skillet or griddle over medium heat and lightly grease with butter or oil.
07 - Pour approximately 1/4 cup batter onto skillet. Add a heaping teaspoon of cheesecake mixture and swirl gently with knife tip or skewer. Cook 2-3 minutes until bubbles form and edges set, then flip and cook 1-2 minutes until golden.
08 - Repeat with remaining batter and cheesecake swirl, greasing skillet as needed between batches.
09 - Serve warm pancakes topped with strawberry sauce and additional fresh strawberries if desired.