Anna Olson's Coffee Cake Recipe: Brown Butter Streusel That Crunches Perfectly

This perfect Anna Olson coffee cake delivers the ideal balance of tender crumb and irresistible brown butter streusel that stays gloriously crunchy. The secret lies in the rich, nutty depth of browned butter—caramelized until it smells like a bakery—infused into both the cake batter and the streusel topping. I’ve baked this version dozens of times, and it never fails to disappear within hours, whether served with morning coffee or as an afternoon treat.

The recipe combines classic coffee cake elements with Anna Olson’s signature attention to texture: a moist, buttery cake layer that contrasts beautifully with the crunchy streusel topping. Brown butter adds complexity that sets this apart from traditional recipes, while a touch of cinnamon and vanilla ensures warmth in every bite. The streusel isn’t just sweet—it’s packed with buttery bits that hold their shape perfectly, even after slicing.

What makes this recipe truly foolproof is the method: no fussing with layers or complicated techniques, just a straightforward approach that yields a golden, inviting loaf every time. The cake rises just enough to create a tender crumb, while the streusel remains crisp along the edges and slightly soft in the center—exactly how it should be. The aroma alone will have everyone gathering in the kitchen, and the first slice will have them asking for the recipe.

Serve warm with a dollop of whipped cream or a pat of butter to enhance the brown butter flavor, or enjoy it at room temperature with a cup of coffee. The versatility of this recipe makes it perfect for brunch, dessert, or even a weekend breakfast. Let’s get baking—this coffee cake is worth every minute of the wait.

Ingredients for anna olson coffee cake

Brown butter and golden streusel—these ingredients create Anna Olson's legendary coffee cake.

The butter is non-negotiable here. European-style unsalted butter like Plugrá or Land O'Lakes has higher fat content, which translates to richer flavor and better texture. For the brown butter, don't rush it—let it foam and turn golden brown, then cool slightly before using. The oats need to be rolled, not quick, for that perfect crunch. I always grab mine from the bulk section at Whole Foods or King Arthur Flour—they're consistently high quality. The walnuts? Toast them for 5 minutes at 350°F before chopping—it makes all the difference in flavor.

No light brown butter? Regular butter browned until golden works, but you'll lose some of that caramelized depth. Substituting walnuts? Pecans or hazelnuts at the same amount keep the texture similar. Running low on vanilla? Vanilla bean paste adds little flecks of flavor. The baking powder must be fresh—if your recipe calls for 2 teaspoons and it's over a year old, toss it. For the streusel, if you don't have rolled oats, blend quick oats into flour—it's a game-changer for texture. And if you're feeling fancy, swap half the flour for almond flour for a nutty twist.

Store the baked cake in an airtight container at room temperature for up to 3 days—it actually tastes better the next day as the flavors meld. For longer storage, wrap tightly in plastic and freeze for up to 3 months. The streusel stays crisp if you reheat slices in the oven for 5 minutes at 300°F. I always bake an extra loaf—it disappears fast, and leftovers reheat beautifully. The aroma alone will have your whole house gathering, so plan accordingly.

Step-by-step instructions for Anna Olson's coffee cake

Here's how to achieve that signature crunchy streusel and tender crumb every time.

In a medium saucepan, melt the 2 cups unsalted butter over medium-low heat. Watch closely as it foams and bubbles—this is when the milk solids begin to brown. Once the butter turns a rich golden brown and smells nutty (about 5-7 minutes), immediately pour it into a heatproof bowl to cool slightly. This caramelized butter is the secret to the streusel's irresistible crunch.

While the butter cools, pulse the 1 cup old-fashioned rolled oats in a food processor until they resemble coarse flour. Transfer to a large bowl and whisk in the 3 cups all-purpose flour, 1 tablespoon ground cinnamon, ½ teaspoon salt, and ½ cup chopped walnuts. Once the brown butter has cooled to 120°F (just warm to the touch), drizzle it over the dry ingredients while whisking continuously. The mixture should hold together when pressed but still be crumbly—this is your perfect streusel texture.

In a separate large bowl, whisk together the 1.5 cups granulated sugar, ½ cup brown sugar, and 2 whole large eggs until fully combined and slightly thickened. Gently fold in the 1 tablespoon vanilla extract, being careful not to overmix. In a third bowl, sift together the remaining 1 tablespoon ground cinnamon, 2 teaspoons baking powder, and ½ teaspoon salt. Gradually add the dry ingredients to the wet mixture, folding just until combined—you should still see small flour streaks. This ensures a tender crumb without developing gluten.

Pour half of the batter into a greased 9x13-inch baking dish, spreading it evenly. Sprinkle half of the streusel mixture over the top, pressing down gently to ensure even coverage. Repeat with the remaining batter and streusel, creating a marbled effect by swirling the back of a spoon through the streusel if desired. The streusel should peek through the batter in places, promising that perfect crunch with every bite.

Preheat your oven to 350°F and place a rack in the lower third position. Bake the coffee cake for 45-50 minutes, until the edges are deep golden brown and a toothpick inserted near the center comes out clean. The streusel should be crisp and caramelized on top, while the cake underneath remains moist and tender. If the streusel browns too quickly, tent the pan with foil to prevent over-browning while allowing the cake to finish cooking.

Remove the cake from the oven and let it cool in the pan for 10 minutes before transferring to a wire rack to cool completely. This resting period allows the cake to set properly and prevents the streusel from becoming soggy. The contrast between the warm, tender cake and the cool, buttery streusel is what makes this coffee cake truly special—serve it warm with a pat of the leftover brown butter for an extra touch of indulgence.

Storing and reheating your leftovers

Room-Temp Storage

Keep your coffee cake in an airtight container at room temperature for up to 3 days—this is when the flavors truly shine! The streusel stays crisp along the edges while the cake maintains its tender crumb. I like using glass containers with silicone seals from Pyrex because they preserve moisture better than plastic. 💛

Fridge Refresh

If you’ve stored it longer than 3 days, pop slices in the oven for 5 minutes at 300°F to revive the streusel’s crunch. For a quick fix, microwave a slice on high for 15-20 seconds, then finish under a broiler for 30 seconds to crisp the streusel. Always reheat covered to prevent drying.

Freezer Magic

For longer storage, wrap individual slices in plastic wrap and place them in a freezer bag with parchment paper between layers. This prevents freezer burn and keeps the streusel from getting soggy. Thaw overnight in the fridge or reheat directly from frozen in the oven at 325°F for 15-20 minutes.

Streusel Secrets

The streusel’s crunch is delicate—never microwave it uncovered! If reheating, place slices on a parchment-lined tray and broil for 1-2 minutes until golden. The goal is to crisp the streusel without drying out the cake underneath. A sprinkle of powdered sugar after reheating adds a sweet finish.

Make-Ahead Pro Tip

Bake an extra loaf and freeze it! Wrap the whole cake in plastic wrap, then aluminum foil for an extra layer of protection. Label with the date—it stays fresh for up to 3 months. To serve, thaw overnight in the fridge, then reheat as directed. This is my go-to for lazy mornings or spontaneous coffee dates. ✨

Frequently asked questions