Cozy fall-inspired muffins with warm spices, toasted walnuts, a crunchy walnut streusel topping, and a sweet maple glaze, perfect for holiday breakfasts and brunches.
Be gentle when mixing the batter to avoid tough muffins; stir just until combined., Keep oven door closed during baking to maintain heat and ensure proper rising., Fill muffin cups nearly full for domed tops., Cool muffins completely before glazing to prevent glaze from melting., Nut substitutes: pecans, sliced almonds, or sunflower seeds (adjust streusel accordingly)., Gluten-free: use a 1:1 gluten-free flour blend instead of all-purpose flour., Dairy-free/vegan: substitute vegan butter and plant-based milk; replace eggs with flax eggs or egg replacer., Flavor variations: add pumpkin pie spice or increase nutmeg; use extra maple or vanilla extract if hazelnut extract is unavailable., Add-ins: mini chocolate chips, dried cranberries, or diced apples/pears (up to 1 cup)., Streusel and glaze variations: add rolled oats to streusel; substitute cream cheese glaze; omit glaze and dust with powdered sugar., Reduce sweetness by cutting back streusel sugar or omitting glaze.