Ok. You need a candy thermometer, but those are inexpensive at any market. However, my mom says that the metal ones are the best because they don't break. I couldn't find one at our store, but maybe if check a kitchen store, you might have some luck. Everything else, I'll bet you have in your pantry, so try it! It's fun to make candy and it's impressive. Have fun!
Here's the recipe, in my mom's own words (parenthetical commentary provided by yours truly).
What you need
2 cups butter (real butter)
2 cups sugar
2 Tbs. light corn syrup
1/3 cup water
1 pkg. milk chocolate chips (12 oz.)
1 cup finely chopped, toasted nuts (any kind will do, I'm partial to pecans. Must be my Southern heritage.)
1. Line a 15 x 10 x 1 inch baking pan with heavy duty foil, extending over edges.
2. In a 4-5 quart sauce pan, melt butter. Stir in sugar, syrup and water. Cook over medium-high heat to boiling, stirring till sugar is dissolved. Avoid splashing up on the sides of your pan.
3. Clip you candy thermometer to the pan. Be sure bulb or bottom of thermometer is well covered and not touching bottom of pan. Cook over medium heat, stirring frequently till thermometer registers 290 degrees, soft crack stage. This should take about 15 minutes. (Now, if you use a 4 qt. pan, like I did, your mixture is going to reach the tip top of the pan, and your heart is going to be in your throat imagining all that sticky corn syrup spilling out onto your stove. So just stir like crazy, gently though, and it will all be good. If you have a gas range, you may want to start out slower than med. heat.) The mixture will turn golden brown right at the last. (That's one way to know it's done. If it's still butter yellow, it's not done and will turn out the color of wax if taken off at this point. Trust me, I know.)
4. Remove thermometer. Pour into prepared pan; spread evenly. Cool 5 minutes, or until top is just set. Sprinkle on your chocolate chips and let set 2 minutes. Spread with a spatula till all toffee is coated with chololate. Top with nuts, press into chocolate. Cool several hours or till set. If necessary, place in fridge. (Mom sets it outside, covered and safe from the squirrels. My parents live in the woods. I don't know if a towel would keep it safe from a bear....hmmm.)
5. Holding foil, lift candy out of the pan. Break into pieces. To store, layer candy between sheets of waxed paper.
Makes about 2 1/2 pounds.
Doesn't that sound wonderful? Here's the way it came out for me. Remember, though, I'm at 8,000+ ft. in altitude and that just does funny things to baked goods.