Do you have any milk? / Make this wonderful dessert without an oven! / Few ingredients 👍🔝

A quick dessert to make! Based on milk, sugar, vanilla, flour, butter and cornstarch. Nothing's easier ! Your family will love your dessert made without an oven. Good tasting !
Ingredients:
100 gr unsalted butter
120 gr of wheat flour
1 liter of milk
170 gr of sugar
1 teaspoon of vanilla extract
1 tablespoon of cornstarch
30 cl of water