Preheat oven to 400℉. Line a muffin tin paper or parchment liners.
First make the streusel topping. Melt butter. Add brown sugar, flour and cinnamon in a small-medium bowl and mix well to break up any clumps of sugar. Pour in half the melted butter and mix well with a fork. Pour in remaining butter and mix with your fingers until mixture resembles soft crumbles of slightly wet sand. Set aside.
In a medium bowl, combine flour, brown sugar, baking soda, baking powder, cinnamon, salt, nutmeg, and allspice in a bowl and whisk to incorporate.
In a large mixing bowl, combine wet ingredients: egg, pumpkin puree, oil, orange zest, and orange juice.
Add flour mixture to the wet ingredients, stirring with a fork until just incorporated with no flour bits remaining. Take care not to overmix. The batter will be very thick and sticky.
For extra fluffy muffins with a taller rise, cover mixing bowl with a clean dishcloth and let the batter rest for 15 minutes.
Scoop batter into lined muffin tin, filling to the top of the muffin liner for larger muffins or at the 1/2 way mark for smaller muffins. I use between 3-4 TBSP batter per muffin cup. Recipe yields 8-9 larger muffins or 12 smaller muffins.
Sprinkle each one generously with streusel.
Place muffins in the oven on the center rack. After closing the door, decrease oven temperature to 350℉. The higher bake time in the beginning helps the muffins rise taller.
Bake on the center rack in the center of the oven for 22-24 minutes, using a toothpick inserted into the center of the loaf to test doneness. If making 12 smaller muffins, check them at around 16 minutes.
Commence faceplant!
Notes
Optional Orange Vanilla Glaze
1/4 cup powdered sugar
1-2 TBSP fresh orange juice
zest of half an orange
1/4 teaspoon vanilla
Whisk ingredients together in a small bowl until smooth.
Taste and add any additional vanilla, orange juice, or zest to taste. Additional powdered sugar can be added for a thicker consistency. Drizzle over muffins.
Craving pumpkin spice streusel bread instead? Perfecto! See tips below:For a loaf, pour batter into a greased or parchment paper lined 8x4 inch loaf pan. Top with streusel and bake at 350 degrees F for 45-50 minutes, until a toothpick comes clean from the center. Allow to cool on a wire cooling rack, then slice and serve with your choice of butter, apple butter, pumpkin butter, peanut butter, or any spread your heart desires!Nutrition Facts below are estimated for 9 muffins using an online recipe nutrition calculator. Adjust as needed and enjoy!