1 teaspoon Instant coffee granules (decaf or regular)
1/2 cup Very hot water (or swap the instant coffee and water for 1/2 cup of hot, strong brewed coffee)
2 tablespoons Ground flax seed
1/2 cup Old-fashioned oats (not quick oats)
3/4 cup Melted coconut oil (plus a bit more for oiling the pans)
1 1/4 cups light brown sugar (firmly packed)
1 teaspoon pure vanilla extract
1 1/4 cups whole wheat pastry flour
3/4 cup unsweetened cocoa powder
1/2 teaspoon baking powder
1/2 teaspoon baking soda
1/2 teaspoon salt
3 1/2 ounces Semi-sweet chocolate (a generous 1/2 cup, chopped into pieces about 1/4-inch or 1/3-inch wide, with all slivers and shavings)
3/4 cup Very coarsely chopped walnuts