Preheat your oven to 350F
Grease a 9x13" baking pan with a non stick cooking spray
In a large bowl, mix together your eggs, vegetable oil, sugar, and pumpkin purée
Now mix in your flour, cinnamon, pumpkin pie spice, baking powder, baking soda, and salt
Pour into your greased baking pan and bake for 35 minutes
Pour the half of the can of sweetened condensed milk evenly over the top of the still HOT cake
Allow to sit about 30 minutes then prepare your frosting
Scoop your frosting onto your cake and spread evenly with a spatula