Super Easy, Super Yummy Plum Cake - Salamanca Fresh

Ingredients

• 1 1/2 cups plain flour
• 1 1/2 tsp baking powder
• 1/2 tsp salt
• 1/4 tsp ground cardamom
• 1/2 cup butter
• 1 cup sugar
• 2 tbsp sugar (extra)
• 3 large eggs
• 1 tsp vanilla
• 1/4 cup sour cream
• 4 plums, pitted & sliced