Homemade strawberry jam is easy to make in the microwave. You can use fresh or frozen strawberries. This recipe makes 2 1/2 cups of jam.
Place in a large (4 litres/16 cups capacity) microwave safe bowl with the lemon juice. Microwave on high for 5 minutes. It should start smelling amazing already. Remove from microwave.
Return to the microwave, cook for 15 minutes on high, stopping every 5 minutes to stir and check. Don't leave unattended just in case it boils up and over the bowl.