Strawberry and vanilla cream buns

Ingredients

• 300 g strong bread flour
• 125 ml milk lukewarm
• 45 g castor sugar
• 6 g active dry yeast
• 1 egg
• 30 g butter room temperature cubed
• 1/2 tsp salt
• 1/2 tsp vanilla extract
• 125 ml milk
• 10 g cornstarch
• 15 g sugar
• 1 egg yolks
• 1 tsp vanilla
• 1/4 tsp salt
• Strawberry Jam
• Fresh Strawberries