Step 1
Line the bottom of an 8x8 square pan with plastic wrap or parchment paper, letting it hang over each side.
Step 2
In a microwave-safe bowl, combine the sugars and cream, stirring together to combine.
Step 3
Cook in the microwave for 4 minutes, then stir and cook for another 4 minutes. Note: The cooking time may vary depending on the wattage of the microwave you use.
Step 4
Add the vanilla and butter and beat at high speed with an electric mixer until it thickens and loses its gloss, about 2 minutes.
Step 5
Spread in the prepared pan, spreading it evenly. Cover and refrigerate for about 30 minutes or until the fudge is firm. Remove from the pan and cut into squares.
*Be sure to use an electric hand mixer to give you an ideal soft texture. A hand whisk doesn't allow you to incorporate enough air fast enough.
*This candy treat gets better with age. Let it sit at room temperature for 2 days, covered, for best results.