Caramel

1 C. butter (or 1/2 C. butter, 1/2 C. margarine)
2 C. white karo syrup
4 C. sugar
2 large cans condensed milk

In large kettle, melt butter. Add karo, then sugar. cook until it boils, stirring constantly with a wooden spoon (not metal)
Add canned milk a bit at a time so it doesn't stop boiling. Continue cooking & stirring to firm ball stage (240°) Pour into 9x13 buttered baking dish (prepare ahead)
Tip: This candy takes about 45 min. to cook. You can cook it on high until you can see it begin to get thicker - then turn to medium so it won't scorch. Prepare the buttered dish before starting candy.
Chopped nuts may be sprinkled in bottom of dish. Pour over carefully with the caramel.