Beautiful Grape Harvest Cake – Sweet Saffron Spice

Ingredients

• 3/4 cup caster sugar
• 2 eggs at room temperature
• 1/4 cup olive oil
• 60g butter, melted
• 1/2 cup milk
• 1 teaspoon vanilla extract
• Finely grated zest of 1 orange
• Finely grated zest of 1 lemon
• 1-1/4 cup plain flour
• 1 teaspoon baking powder
• 1/2 teaspoon salt
• 600g grapes (I used red crimson seedless)