Granola is a mixture of oats and flakes, flavored with brown sugar, honey, cinnamon, nutmeg and orange zest.
Heat oven to 350 degrees. Combine oats, flakes, sugar, nuts, zest, nutmeg, and cinnamon in a bowl. Melt butter and honey in a saucepan; add to mixture. Spread in a 7-by-11-inch baking pan; bake until just golden, 10 minutes. Let cool in pan. Mixture will harden. Break into pieces; serve. Store in an airtight container up to 10 days.