- Preheat the Oven: Preheat your oven to 350°F (175°C). This ensures that the cake will bake at the right temperature from the start.Grease a springform pan with butter or non-stick spray to prevent the cake from sticking. 
- Cream Butter and Sugar: In a large mixing bowl, beat together 1/2 cup butter and 1 2/3 cups sugar until the mixture becomes light and fluffy. This process incorporates air into the batter, making the cake texture soft and airy. 
- Add Eggs and Vanilla: Beat in 2 eggs, one at a time, ensuring each egg is fully incorporated before adding the next. This step ensures the eggs blend smoothly with the butter and sugar. Add 1 1/2 teaspoons vanilla and mix until the batter is smooth and fragrant. 
- Mix in Dry Ingredients: In a separate bowl, whisk together the 1 1/2 cups flour, 1 teaspoon baking soda, 1 teaspoon salt, 1 1/2 teaspoons cinnamon, and 1/2 teaspoon nutmeg. Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix, as this could result in a dense cake. 
- Add Apples: 3 cups of diced & peeled apples (about 2 large apples) should be added to the batter. Gently fold the apples into the batter until evenly distributed. The apples will add moisture, flavor, and texture to the cake. 
- Optional Nuts: If you’re using 1/4 cup chopped pecans or walnuts, fold them into the batter at this stage. They add extra crunch and a nutty flavor that pairs beautifully with the apples. 
- Sugar and Cinnamon Topping: In a small bowl, combine cinnamon and sugar. Sprinkle this mixture over the top of the cake batter. This creates a sweet and spicy crust that will form during baking, giving the cake a nice flavor boost. 
- Bake the Cake: Pour the batter into the prepared springform pan and spread it evenly. Bake the cake in the preheated oven for about 1 hour and 15 minutes. Check the cake for doneness by inserting a toothpick or cake tester into the center. If it comes out clean, the cake is ready. 
- Cool and Serve: Let the cake cool for at least 15-20 minutes in the pan. Once cooled, remove the sides of the springform pan and transfer the cake to a cooling rack to cool completely. Slice and enjoy your moist, aromatic Swedish Apple Cake!