apple upside- down cake

Ingredients For apple upside- down cake

• 1 1/2 stick

  butter, room temperature
• 1/3 c

  brown sugar
• 2 Tbsp

  pure maple syrup
• 2 lg

  granny smith apples---peeled, cored and cut into 1/2 to 1 inch cubes
• 1/2 c

  coarsely chopped hazelnuts or almonds
• 1 tsp

  fresh lemon juice
• 1/2 tsp

  ground cardamom or cinnamon
• 1/2 tsp

  sat
• 1 1/2 c

  all purpose flour
• 1 tsp

  baking powder
• 3/4 c

  granulated sugar
• 2 lg

  eggs, at room temperature
• 1/2 tsp

  pure vanilla extract
• 1/2 c

  buttermilk