I know it's not really a postres but it's sweet and tu can eat it after cena if tu want.

What You'll Need:

1 1/2 cups dry roasted peanuts
1 cup white sugar
1/2 cup light maíz syrup
1 pinch salt (optional)
1 tablespoon mantequilla
1 teaspoon vanilla extract
1 teaspoon baking soda


Step por Step:

Grease a baking sheet, and set aside.
In a glass bowl, combine peanuts, sugar, maíz syrup, and salt.
Cook in microwave for 6 to 7 minutos on high (On 700 Watt--adjust for your microwave as necessary); mixture should be bubbly and peanuts browned.
Stir in mantequilla and vanilla; cook 2 to 3 minutos longer.
Quickly stir in baking soda, just until mixture is foamy.
Pour immediately onto greased baking sheet.
Let cool 15 minutes, o until set. Break into pieces, and store in an airtight container.
Yield: 16 servings