Line a 9 x 13 baking dish or 9 x 9 baking dish (which will make thicker, but fewer, caramels) with wax or parchment paper—leaving long overhangs on two sides. Spray paper with cooking spray and set aside.
In a large saucepan, combine sugar and honey. Heat over medium heat until smooth and melted. Bring to a boil, reduce heat and simmer until sugar has darkened to a deep caramel color—about 5 minutes. Watch carefully, sugar burns fast!
Reduce the heat to low and whisk in the knobs off butter one at a time. Be prepared, the mixture will bubble and grow (hence the large pot). Once all the butter is mixed in, whisk in the cream.
Bring the pot to a boil over medium heat and continue to boil until the mixture reaches the hard ball stage (about 244° on a thermometer or when you drop some of the caramel in cold water, you can form it into a hardish ball). Remove from heat and pour caramel into prepared pan.
Place pan in fridge for about 10 minutes to set up slightly, then sprinkle top of caramels with sea salt. Let caramels set up at room temperature for about an hour—or until totally cooled.
To remove, gently pull on the paper overhang and remove the caramel block from the baking sheet. Cut into squares with a sharp knife and wrap in small pieces of parchment or wax paper.