Add Butter (5 tablespoon) to a microwave-safe bowl and heat in the Panasonic Microwave Oven for 10-20 seconds or until it is melted.
Add Brown Sugar (1 cup) to the butter and mix well. Microwave again for 1-2 minutes or until the sugar has dissolved into the butter.
Add Sweetened Condensed Milk (1 cup) and mix vigorously. Make sure the sugar is evenly distributed.
Microwave for 2 to 3 minutes.
Stir well and microwave again for 2 minutes. The color should turn into a deep amber color like caramel sauce.
Add Cream (1/2 cup), Sea Salt (1 pinch), and mix well. Microwave for 30 seconds.
Mix well and let it cool completely. You can use the sauce to top desserts and ice cream! Cooking results may vary depending on microwave oven used.