Made from polymer clay, used Sculpey III (3)
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I didn't have to mix any colors as the crafts store already had a chocolate type color and a dough-y color.
made really thin rolls off the chocolate colored clay, baked at 275*F for 10 minutes. or you can roll it thin and flat, then bake and slice into really small bits.
After baked and cool enough to touch, slice up into tiny chocolate chunks.
Roll doughy colored clay into tiny rounds about "pea" size and slightly push down, but not all the way.
dipped one side of the 'cookie' into the layer of bits of chocolate chunk pieces.
Then press the chocolate chunks into the cookie, this will make the cookie flatter. so that is why you don't press down all the way before putting the chunks in.
Took a small dry paint brush and brushed it on some brown chalk (darker than the dough, but lighter than the chunks).
with the dry paint brush, tap excess off and tap the brush along the edges and some on the top to make it look cooked.
I didn't do much texturing :/
Then bake again for 10-15 minutes...
Depending on the type of clay you get depends on the temp and time.