Place butter, sugar and honey in TupperWave® Stack Cooker 1¾-Qt./1.75 L Casserole, microwave on high power 2 minutes and mix well until a smooth mixture forms.
Add peanuts and microwave on high power an additional 2 minutes. Add vanilla and carefully whisk; mixture will be boiling. Return to microwave for 2 minutes on high power.
Let Set & Serve
Pour on a baking sheet lined with Silicone Baking Sheet with Rim and sprinkle salt evenly over brittle. Refrigerate 15 minutes. Break into pieces and store in a sealed Tupperware container until ready to eat.