Preparation Steps

• Preheat your oven to 350°F (175°C). Grease and flour a 10-cup bundt pan.
• In a large bowl, whisk together the flour, sugar, baking powder, baking soda, and salt.
• In a separate bowl, cream together the softened butter until light and fluffy. Gradually beat in the sugar until well combined.
• Add the eggs one at a time, beating well after each addition. Stir in the vanilla extract.
• In a small bowl, whisk together the sour cream and milk.
• Alternately add the dry ingredients and the sour cream mixture to the butter mixture, beginning and ending with the dry ingredients. Mix until just combined, being careful not to overmix.
• Gently fold in the mixed berries.
• Pour the batter into the prepared bundt pan and spread evenly.
• Bake for 55-65 minutes, or until a wooden skewer inserted into the center comes out clean.
• Let the cake cool in the pan for 10-15 minutes before inverting it onto a wire rack to cool completely.