Sour Cream Coffee Cake

🧁 Ingredients
For the Cake Batter:
- 2 1/2 cups (315g) all-purpose flour
- 1 tsp baking powder
- 1/2 tsp baking soda
- 1/2 tsp salt
- 3/4 cup (170g) unsalted butter, softened
- 1 1/2 cups (300g) granulated sugar
- 3 large eggs
- 1 1/2 tsp vanilla extract
- 1 cup (240g) sour cream (full-fat recommended)
For the Cinnamon Streusel:
- 1 cup (130g) all-purpose flour
- 1 cup (200g) brown sugar, packed
- 2 tsp ground cinnamon
- 1/4 tsp salt
- 6 tbsp (85g) cold unsalted butter, cubed
- Optional: 1/2 cup chopped pecans or walnuts
Optional Vanilla Glaze:
- 1 cup (120g) powdered sugar
- 1–2 tbsp milk
- 1/2 tsp vanilla extract


👩🍳 Instructions
🔸 Make the Streusel:
- In a bowl, mix flour, brown sugar, cinnamon, and salt.
- Cut in cold butter with a fork or pastry cutter until crumbly.
- Stir in nuts if using. Set aside.
🔸 Make the Cake:
- Preheat oven to 350°F (175°C). Grease and flour a 9-inch bundt pan or 9×13-inch pan.
- In a medium bowl, whisk flour, baking powder, baking soda, and salt.
- In a large bowl, cream butter and sugar until light and fluffy (3–4 minutes).
- Add eggs one at a time, mixing well after each. Stir in vanilla.
- Mix in sour cream.
- Gradually add dry ingredients, mixing until just combined.
🔸 Assemble the Cake:
For a Bundt Pan:
- Spoon half the batter into the prepared pan.
- Sprinkle half the streusel evenly over the batter.
- Add remaining batter, then top with the rest of the streusel.
For a 9×13-inch Pan:
- Spread all batter in the pan.
- Sprinkle streusel over the top.
🔸 Bake:
- Bake for 45–55 minutes, or until a toothpick inserted into the center comes out clean.
- Let cool in the pan 10–15 minutes before turning out (if using a bundt pan) or slicing (if in a square/rectangle).
