Procure the ingredients you need.

2 tablespoon butter
2 tablespoon baking soda
1/2 teaspoon salt
2 cups raw peanut
1 cup water
1 cup light corn syrup
2 cups sugar

Brown sugar or muscovado is recommended due to health reasons.

The procedures.
1. Line the baking sheet  with aluminum foil and spray with non stick cooking spray.
2. Mix the sugar and water in saucepan . Add the corn syrup and salt when the sugar is moistened.
3. Cook over medium heat until it reaches 225 degrees  on a candy thermometer  or until it starts bubbling . Mix the peanuts . Cook until 290 degrees.
4. Turn off the heat and mix the butter. Mix well and pour into baking pan.
5. Spread thinly and uniformly with spoon and cool at room temperature. Break or cut into small pieces.
6. Pack in air tight container and seal.