Preheat oven to 325 degrees Fahrenheit and spread pecans on a baking sheet. Toast until fragrant, about 12 minutes.
Melt 2 tablespoons butter and toss with the roasted pecans and 1.5 teaspoons salt. Spread in an even layer on a sheet and bake 5 minutes more, then cool.
In a saucepan, combine white sugar, corn syrup, and water. Bring to a boil and cook until the caramel reaches 250 to 275 degrees Fahrenheit (121 to 135 Celsius).
Carefully stir in the heavy cream and 4 tablespoons butter. Simmer until smooth, then stir in 0.5 teaspoon salt and vanilla.
Spoon the caramel over the pecans in muffin tins or on a lined sheet, forming small clusters. Let them cool slightly to set.
Dip each caramel cluster into melted chocolate and place back on the sheet. Chill until the coating is firm.
Store in an airtight container and enjoy when desired.
Notes
These chewy praline bites are perfect for gifting and gatherings. For an extra texture contrast, sprinkle a pinch of sea salt over the chocolate before it sets.