Preheat the oven to 375 F. Lightly spray an 10.5 x 7.5 (or similar size) baking dish with cooking spray.

In a large bowl, add the eggs, olive oil, maple syrup, almond milk, and lemon juice. Whisk well until everything is thoroughly combined.

In a separate small bowl, add the oats, baking powder, and salt. Mix to combine. Pour mixture into the large bowl with the wet ingredients and mix until everything is well combined.

Fold in the frozen raspberries and chocolate chips, reserving some for the top of the baked oatmeal.

Pour the mixture into the baking dish, using a spatula to spread it evenly throughout and smooth out of the top.

Bake in the preheated oven for 40-45 minutes, until set. Let cool completely before cutting into squares.