Stir together ricotta cheese, powdered sugar, and vanilla until smooth. Spread 8 bread slices with mixture and top with remaining slices, as with a sandwich. Mix together beaten eggs, and milk. Melt butter in frying pan over medium to medium-high heat. Dip ricotta sandwiches in egg mixture. Fry until golden brown on both sides, about 5 minutes in all. Remove onto plate and garnish with strawberries. Top with syrup.