Peach Upside-Down Ricotta Cake

Ingredients (14)

• 2 to 3 peaches
• 1 teaspoon fresh lemon juice
• 1 teaspoon corn starch
• 1 to 2 tablespoons light brown sugar
• 1 cup all-purpose flour
• 1/2 teaspoon baking powder
• 1/4 teaspoon baking soda
• 4 tablespoons butter
• 1/2 cup sugar
• 1 large egg
• 2 teaspoons lemon zest
• 2 teaspoons pure vanilla extract
• 1/2 cup ricotta cheese
• blueberry-preserves juice