Science Fun: Edible "Rocks"

It's official... I've heard of almost everything now! Here's a great way for teaching about three different kinds of rocks ... and making a unique snack at the same time. My son definitely thinks this is a hit!!

Please note: take note of the ingredients listed and be aware of possible food sensitivities and allergies of the children involved.

Edible Rock Recipes:

Igneous Rocks

1 can evaporated milk (6 oz.)
1 1/2 cups sugar
1/4 teaspoon salt
1/2 cup chopped nuts
1 1/4 cups tiny marshmallows
1 1/2 cups chocolate chips
1 teaspoon vanilla

Grease an 8 x 8 or 9 x 9 inch pan. Combine evaporated milk with sugar and salt in a saucepan. Bring to aboil. Reduce heat and simmer, stirring for 5 - 9 minutes. Remove from heat. Add remaining ingredients and stir gently. Pour into prepared pan. Let cool. (Refrigerate) 1 pan (8 x 8) makes 30 1 inch squares.

Metamorphic Rocks

1/2 cup shortening or margarine
1 cup brown sugar
1/2 teaspoon vanilla
1/2 cup chopped nuts
1/2 cup well-drained crushed pineapple
1 egg, beaten
1 cup whole wheat flour
1 cup flour
1 teaspoon soda
1 teaspoon salt


Cream the shortening and the sugar. Add the beaten egg and vanilla. Add the dry ingredients and mix. Stir in the fruit and the nuts. Drop by teaspoonful onto cookie sheet. Bake for 7 minutes at 375 degrees. Note: Chocolate chips, coconut, wheat germ, etc. can also be added.

Sedimentary Rocks

1 1/4 cups crushed flake cereal
1 1/2 tablespoons sugar
1/2 cup margarine


Melt the margarine. Mix with the cereal and the sugar. Press into an 8 x 8 or 9 x 9 pan.

1 cup chocolate or butterscotch chips
1 1/4 cups coconut
1 cup chopped nuts
1 can sweetened condensed milk (14 oz.)

Sprinkle the chips over cereal layer. Sprinkle the coconut over chips. Sprinkle the nuts over coconut. Pour condensed milk over the layers. Bake for 25 minutes at 325 degrees.

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Edible Rock Recipes by Cindy Downes. For more recipes and other "fun stuff", check out her website at http://www.oklahomahomeschool.com/funstuff.html


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