• Preheat oven to 350°F (175°C). Grease and flour a loaf pan or an 8x8-inch baking pan.

Make the cake batter

• In a large mixing bowl, beat the softened butter and brown sugar together until light and fluffy.
• Add egg yolks and vanilla extract, mixing well.
• In a separate bowl, whisk together the flour, baking powder, baking soda, cinnamon, and ginger.
• Gradually add the dry ingredients to the wet mixture, stirring until just combined.
• Fold in raisins, chocolate chips, and chopped apples until evenly mixed.

Make the streusel topping

• In a small bowl, combine flour, brown sugar, and cinnamon.
• Cut in the cold cubed butter using a fork or your hands until the mixture becomes crumbly.
• Stir in the chocolate chips (if using).

Assemble & Bake

• Pour the cake batter into the prepared pan, spreading it out evenly.
• Sprinkle the streusel topping evenly over the batter.
• Bake for 35-45 minutes, or until a toothpick inserted in the center comes out clean.
• Let the cake cool in the pan for 10 minutes while you prepare the glaze.

Make the Brown Sugar Glaze

• In a saucepan over medium heat, melt the butter and brown sugar together, stirring until the sugar dissolves.
• Add the milk, bring to a gentle simmer, and let it bubble for 1 minute.
• Remove from heat and stir in the vanilla extract.
• Gradually whisk in the powdered sugar until smooth.

Glaze & Serve

• Once the cake is warm (not hot), pour the brown sugar glaze over the top, making sure to coat it evenly.
• Let the cake sit for 30 minutes to allow the glaze to set.
• Slice, serve, and enjoy!