Spray 9x13 dish with baking Pam and preheat oven to 375°F
Cut each biscuit into quarters and layout across the bottom of the pan to cover. Move pieces to fill any gaps.
Melt butter and combine with eggs, sweetened condensed milk, and vanilla bean paste in a .small bowl. Whisk well.
Evenly pour mixture over the biscuits and bake for 25 minutes (check at 15 minutes) until they start to firm up or just as they begin to turn a very light golden shade.
While that bakes, boil 6 small, whole peaches with skin on for 45 seconds. Hold each peach down with a spoon so it's fully submerged in boiling water for 45 seconds. Then remove each boiled peach and immediately place in the ice bath. The skin should look a little wrinkled - peel skin by hand. Any skin that remains will further soften during sauteing and baking.
Use a sharp knife to cut the circumference of the peach to the pit. Twist the peach halves in opposite directions to separate. Remove peach pits then thinly slice the peaches.
Sauté (over medium heat) peaches in in butter, sugar, vanilla, sea salt flakes until it bubbles a little and peaches are just beginning to brown. Remove from heat.
Remove biscuits from oven and poke holes with wooden spoon handle all over (about an inch apart)
Melt butter and whisk together with whole milk. Pour mixture evenly over par baked biscuit layer.
Pour peach filling mixture (with sauce from pan) and evenly distribute over the biscuit layer