In a separate bowl, mix the sugar, flour, and salt. Add beaten eggs, milk, butter, and vanilla, and mix well.
1 c. sugar, 1 1/2 Tbsp. flour, 1/4 tsp. salt, 1 c. whole milk (can also use half and half or heavy cream, if you prefer), 2 large eggs, beaten, 1 Tbsp. butter, melted, 1 tsp. vanilla extract