187.5gramsall-purpose flourplus a tablespoon for fruit
½tablespoonbaking powder
1teaspoonsea salt
6tablespoonbutterunsalted and softened
100gramsgranulated sugarabout ½ cup
1largeegg
1teaspoonpure vanilla extract
¼cupwhole milk
¼cupGreek yogurt
6ouncesstrawberriesquartered, divided
6ouncesrhubarbchopped, divided
TOPPING:
125gramsall-purpose flourabout 1 cup
66gramsgranulated sugarabout ⅓ cup
42.5gramsold fashioned oatsabout ½ cup
1stickbutterunsalted and melted
½tablespoonground cinnamon
½teaspoonsea salt
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Instructions
Preheat oven to 350F and line a 9x9 inch baking pan with parchment paper or grease well.
In a small bowl add fruit and sprinkle with about a tablespoon of flour, then set aside.
Whisk dry ingredients in a medium bowl: flour, baking powder and salt. Set aside.
Cream butter and sugar in a large bowl with a hand mixer until smooth. Then add egg and vanilla and beat until combined.
Alternate whole milk, Greek yogurt and flour mixture slowly until incorporated.
Fold in strawberries and rhubarb just until combined, then transfer the batter to the prepared baking dish.
In another separate bowl, add topping ingredients and mix with a spatula until combined, it should be moist but not overly wet.
Sprinkle over the top of the batter and bake for about 30-35 minutes, or until top is golden brown and a toothpick comes out with moist crumbs from the centre of the cake.
Allow to cool in pan for at least 30 minutes before serving.
Notes
Toss the Fruit in Flour: Lightly coating the strawberries and rhubarb helps prevent them from sinking to the bottom of the pan.
Don’t Overmix: Once you combine the flour mixture with the wet ingredients, mix just until incorporated to keep the cake soft.
Even Streusel Distribution: Sprinkle the topping evenly across the surface for a consistent crunchy layer in every bite.
Check the Centre: The centre of the cake should be set with just a slight softness when done, as it will continue to firm up while cooling on a wire rack.
Room Temperature: Let your butter, egg and yogurt come to room temperature so the batter mixes smoothly and evenly.
Refrigerator: Store in an airtight container for up to 3-4 days to keep it fresh and moist.
Freezer: Wrap slices tightly and freeze for up to 2-3 months, then thaw in the fridge overnight or on the counter the day of.
Reheating: Warm individual slices gently in the microwave or oven until just heated through.