• Line a 9-inch springform pan with a large piece of parchment paper. You want a large piece of paper to hang on both sides, which will help you lift the cake out of the pan to the cooling rack later on. Spray cooking oil on the bottom and sides of the pan. Set aside.

Coat the peach slices and blueberries

• Open the can of peach slices and drain them over a sieve. Transfer the slices onto a large, thick piece of absorbent paper. Add more absorbent paper on top of the peach slices and press or pat to absorb the peach liquid.
• Transfer the pat-dried peach slices to a mixing bowl, add the blueberries, 3 tablespoons of flour, and 2 tablespoons of sugar.
• Toss the fruit slices using your hands to coat them evenly with the sugar/flour mixture. Set aside.

Streusel Topping

• In a small mixing bowl, add all the streusel topping, stir with a fork, then rub with your fingers to form pieces of dough. Set aside.
• Preheat the oven to 350°F (180°C).

Cake Batter

• In a large mixing bowl, add the dry ingredients: flour, sugar, baking powder, and cinnamon. Whisk to combine.
• Add the liquid ingredients: oil, milk, and vanilla. Use a rubber spatula to combine and form a smooth, thick cake batter.

Assemble the cake

• Pour the cake batter into an even layer in the prepared springform pan.
• Top the cake batter with the coated fruits, spread them evenly, press them a little, not too much, with your fingers.
• Sprinkle pieces of the streusel batter all over the fruits, you will barely see the fruit, and that's normal.
• Bake the cake for 65-75 minutes at 350°F (180°C) until a long, thin pick inserted in the center of the cake comes out with little to no crumbs on it.
• Let the cake cool down for 10 minutes in the pan.
• Run a knife all around the cake before opening the springform pan and prevent the sides of the cake from breaking.
• Open the springform gently and release the cake on a cooling rack, lifting the hanging pieces of parchment paper.
• Let it cool down for 1 hour on the cooling rack before slicing.