01 -
In a medium saucepan (off heat), whisk together sugar, cornstarch, and salt. Gradually add milk a few tablespoons at a time, whisking to dissolve the cornstarch. Whisk in eggs and egg yolk. Cook over medium heat, whisking constantly, until bubbles break the surface. Reduce heat to low and cook for 2-3 minutes while whisking. Remove from heat and strain through a fine-mesh sieve into a bowl. Stir in butter and vanilla. Cover with plastic wrap directly touching the surface to prevent skin from forming. Chill in the refrigerator for at least 3 hours or overnight.
02 -
Pulse graham crackers in a food processor until they form crumbs (fine or chunky as preferred). Transfer crumbs to a bowl and mix in sugar, brown sugar, and a pinch of salt. Add melted butter and mix with a fork until crumbs are moist but crumbly.
03 -
Place about 2 tbsp of graham cracker crumble at the bottom of each dish. Layer sliced bananas, strawberries, and approximately 1/4 cup of chilled pudding. Top with whipped cream and sprinkle more graham cracker crumble over the top. Chill assembled parfaits for 15 minutes before serving.